640410400

素因数分解:

$2^5\times 5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^2$

素因数の和:113

約数の個数: 324

約数和(自身を含む): 1989751554

約数和(自身を除く): 1349341154

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 25, 28, 31, 32, 34, 35, 40, 49, 50, 56, 62, 68, 70, 80, 85, 98, 100, 112, 119, 124, 136, 140, 155, 160, 170, 175, 196, 200, 217, 224, 238, 245, 248, 272, 280, 310, 340, 350, 392, 400, 425, 434, 476, 490, 496, 527, 544, 560, 595, 620, 680, 700, 775, 784, 800, 833, 850, 868, 952, 961, 980, 992, 1054, 1085, 1120, 1190, 1225, 1240, 1360, 1400, 1519, 1550, 1568, 1666, 1700, 1736, 1904, 1922, 1960, 2108, 2170, 2380, 2450, 2480, 2635, 2720, 2800, 2975, 3038, 3100, 3332, 3400, 3472, 3689, 3808, 3844, 3920, 4165, 4216, 4340, 4760, 4805, 4900, 4960, 5270, 5425, 5600, 5950, 6076, 6200, 6664, 6727, 6800, 6944, 7378, 7595, 7688, 7840, 8330, 8432, 8680, 9520, 9610, 9800, 10540, 10850, 11900, 12152, 12400, 13175, 13328, 13454, 13600, 14756, 15190, 15376, 16337, 16660, 16864, 17360, 18445, 19040, 19220, 19600, 20825, 21080, 21700, 23800, 24025, 24304, 24800, 25823, 26350, 26656, 26908, 29512, 30380, 30752, 32674, 33320, 33635, 34720, 36890, 37975, 38440, 39200, 41650, 42160, 43400, 47089, 47600, 48050, 48608, 51646, 52700, 53816, 59024, 60760, 65348, 66640, 67270, 73780, 75950, 76880, 81685, 83300, 84320, 86800, 92225, 94178, 95200, 96100, 103292, 105400, 107632, 114359, 118048, 121520, 129115, 130696, 133280, 134540, 147560, 151900, 153760, 163370, 166600, 168175, 173600, 184450, 188356, 192200, 206584, 210800, 215264, 228718, 235445, 243040, 258230, 261392, 269080, 295120, 303800, 326740, 333200, 336350, 368900, 376712, 384400, 408425, 413168, 421600, 457436, 470890, 516460, 522784, 538160, 571795, 590240, 607600, 645575, 653480, 666400, 672700, 737800, 753424, 768800, 800513, 816850, 826336, 914872, 941780, 1032920, 1076320, 1143590, 1177225, 1215200, 1291150, 1306960, 1345400, 1475600, 1506848, 1601026, 1633700, 1829744, 1883560, 2065840, 2287180, 2354450, 2582300, 2613920, 2690800, 2858975, 2951200, 3202052, 3267400, 3659488, 3767120, 4002565, 4131680, 4574360, 4708900, 5164600, 5381600, 5717950, 6404104, 6534800, 7534240, 8005130, 9148720, 9417800, 10329200, 11435900, 12808208, 13069600, 16010260, 18297440, 18835600, 20012825, 20658400, 22871800, 25616416, 32020520, 37671200, 40025650, 45743600, 64041040, 80051300, 91487200, 128082080, 160102600, 320205200, 640410400]

約数ペア:

[(1, 640410400), (2, 320205200), (4, 160102600), (5, 128082080), (7, 91487200), (8, 80051300), (10, 64041040), (14, 45743600), (16, 40025650), (17, 37671200), (20, 32020520), (25, 25616416), (28, 22871800), (31, 20658400), (32, 20012825), (34, 18835600), (35, 18297440), (40, 16010260), (49, 13069600), (50, 12808208), (56, 11435900), (62, 10329200), (68, 9417800), (70, 9148720), (80, 8005130), (85, 7534240), (98, 6534800), (100, 6404104), (112, 5717950), (119, 5381600), (124, 5164600), (136, 4708900), (140, 4574360), (155, 4131680), (160, 4002565), (170, 3767120), (175, 3659488), (196, 3267400), (200, 3202052), (217, 2951200), (224, 2858975), (238, 2690800), (245, 2613920), (248, 2582300), (272, 2354450), (280, 2287180), (310, 2065840), (340, 1883560), (350, 1829744), (392, 1633700), (400, 1601026), (425, 1506848), (434, 1475600), (476, 1345400), (490, 1306960), (496, 1291150), (527, 1215200), (544, 1177225), (560, 1143590), (595, 1076320), (620, 1032920), (680, 941780), (700, 914872), (775, 826336), (784, 816850), (800, 800513), (833, 768800), (850, 753424), (868, 737800), (952, 672700), (961, 666400), (980, 653480), (992, 645575), (1054, 607600), (1085, 590240), (1120, 571795), (1190, 538160), (1225, 522784), (1240, 516460), (1360, 470890), (1400, 457436), (1519, 421600), (1550, 413168), (1568, 408425), (1666, 384400), (1700, 376712), (1736, 368900), (1904, 336350), (1922, 333200), (1960, 326740), (2108, 303800), (2170, 295120), (2380, 269080), (2450, 261392), (2480, 258230), (2635, 243040), (2720, 235445), (2800, 228718), (2975, 215264), (3038, 210800), (3100, 206584), (3332, 192200), (3400, 188356), (3472, 184450), (3689, 173600), (3808, 168175), (3844, 166600), (3920, 163370), (4165, 153760), (4216, 151900), (4340, 147560), (4760, 134540), (4805, 133280), (4900, 130696), (4960, 129115), (5270, 121520), (5425, 118048), (5600, 114359), (5950, 107632), (6076, 105400), (6200, 103292), (6664, 96100), (6727, 95200), (6800, 94178), (6944, 92225), (7378, 86800), (7595, 84320), (7688, 83300), (7840, 81685), (8330, 76880), (8432, 75950), (8680, 73780), (9520, 67270), (9610, 66640), (9800, 65348), (10540, 60760), (10850, 59024), (11900, 53816), (12152, 52700), (12400, 51646), (13175, 48608), (13328, 48050), (13454, 47600), (13600, 47089), (14756, 43400), (15190, 42160), (15376, 41650), (16337, 39200), (16660, 38440), (16864, 37975), (17360, 36890), (18445, 34720), (19040, 33635), (19220, 33320), (19600, 32674), (20825, 30752), (21080, 30380), (21700, 29512), (23800, 26908), (24025, 26656), (24304, 26350), (24800, 25823)]