20658400

素因数分解:

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

素因数の和:82

約数の個数: 216

約数和(自身を含む): 64120896

約数和(自身を除く): 43462496

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, 980, 992, 1054, 1085, 1120, 1190, 1225, 1240, 1360, 1400, 1519, 1550, 1568, 1666, 1700, 1736, 1904, 1960, 2108, 2170, 2380, 2450, 2480, 2635, 2720, 2800, 2975, 3038, 3100, 3332, 3400, 3472, 3689, 3808, 3920, 4165, 4216, 4340, 4760, 4900, 4960, 5270, 5425, 5600, 5950, 6076, 6200, 6664, 6800, 6944, 7378, 7595, 7840, 8330, 8432, 8680, 9520, 9800, 10540, 10850, 11900, 12152, 12400, 13175, 13328, 13600, 14756, 15190, 16660, 16864, 17360, 18445, 19040, 19600, 20825, 21080, 21700, 23800, 24304, 24800, 25823, 26350, 26656, 29512, 30380, 33320, 34720, 36890, 37975, 39200, 41650, 42160, 43400, 47600, 48608, 51646, 52700, 59024, 60760, 66640, 73780, 75950, 83300, 84320, 86800, 92225, 95200, 103292, 105400, 118048, 121520, 129115, 133280, 147560, 151900, 166600, 173600, 184450, 206584, 210800, 243040, 258230, 295120, 303800, 333200, 368900, 413168, 421600, 516460, 590240, 607600, 645575, 666400, 737800, 826336, 1032920, 1215200, 1291150, 1475600, 2065840, 2582300, 2951200, 4131680, 5164600, 10329200, 20658400]

約数ペア:

[(1, 20658400), (2, 10329200), (4, 5164600), (5, 4131680), (7, 2951200), (8, 2582300), (10, 2065840), (14, 1475600), (16, 1291150), (17, 1215200), (20, 1032920), (25, 826336), (28, 737800), (31, 666400), (32, 645575), (34, 607600), (35, 590240), (40, 516460), (49, 421600), (50, 413168), (56, 368900), (62, 333200), (68, 303800), (70, 295120), (80, 258230), (85, 243040), (98, 210800), (100, 206584), (112, 184450), (119, 173600), (124, 166600), (136, 151900), (140, 147560), (155, 133280), (160, 129115), (170, 121520), (175, 118048), (196, 105400), (200, 103292), (217, 95200), (224, 92225), (238, 86800), (245, 84320), (248, 83300), (272, 75950), (280, 73780), (310, 66640), (340, 60760), (350, 59024), (392, 52700), (400, 51646), (425, 48608), (434, 47600), (476, 43400), (490, 42160), (496, 41650), (527, 39200), (544, 37975), (560, 36890), (595, 34720), (620, 33320), (680, 30380), (700, 29512), (775, 26656), (784, 26350), (800, 25823), (833, 24800), (850, 24304), (868, 23800), (952, 21700), (980, 21080), (992, 20825), (1054, 19600), (1085, 19040), (1120, 18445), (1190, 17360), (1225, 16864), (1240, 16660), (1360, 15190), (1400, 14756), (1519, 13600), (1550, 13328), (1568, 13175), (1666, 12400), (1700, 12152), (1736, 11900), (1904, 10850), (1960, 10540), (2108, 9800), (2170, 9520), (2380, 8680), (2450, 8432), (2480, 8330), (2635, 7840), (2720, 7595), (2800, 7378), (2975, 6944), (3038, 6800), (3100, 6664), (3332, 6200), (3400, 6076), (3472, 5950), (3689, 5600), (3808, 5425), (3920, 5270), (4165, 4960), (4216, 4900), (4340, 4760)]