256164160

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^2$

素因数の和:110

約数の個数: 252

約数和(自身を含む): 776339316

約数和(自身を除く): 520175156

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 31, 32, 34, 35, 40, 49, 56, 62, 64, 68, 70, 80, 85, 98, 112, 119, 124, 136, 140, 155, 160, 170, 196, 217, 224, 238, 245, 248, 272, 280, 310, 320, 340, 392, 434, 448, 476, 490, 496, 527, 544, 560, 595, 620, 680, 784, 833, 868, 952, 961, 980, 992, 1054, 1085, 1088, 1120, 1190, 1240, 1360, 1519, 1568, 1666, 1736, 1904, 1922, 1960, 1984, 2108, 2170, 2240, 2380, 2480, 2635, 2720, 3038, 3136, 3332, 3472, 3689, 3808, 3844, 3920, 4165, 4216, 4340, 4760, 4805, 4960, 5270, 5440, 6076, 6664, 6727, 6944, 7378, 7595, 7616, 7688, 7840, 8330, 8432, 8680, 9520, 9610, 9920, 10540, 12152, 13328, 13454, 13888, 14756, 15190, 15376, 15680, 16337, 16660, 16864, 17360, 18445, 19040, 19220, 21080, 24304, 25823, 26656, 26908, 29512, 30380, 30752, 32674, 33320, 33635, 33728, 34720, 36890, 38080, 38440, 42160, 47089, 48608, 51646, 53312, 53816, 59024, 60760, 61504, 65348, 66640, 67270, 69440, 73780, 76880, 81685, 84320, 94178, 97216, 103292, 107632, 114359, 118048, 121520, 129115, 130696, 133280, 134540, 147560, 153760, 163370, 168640, 188356, 206584, 215264, 228718, 235445, 236096, 243040, 258230, 261392, 266560, 269080, 295120, 307520, 326740, 376712, 413168, 430528, 457436, 470890, 486080, 516460, 522784, 538160, 571795, 590240, 653480, 753424, 800513, 826336, 914872, 941780, 1032920, 1045568, 1076320, 1143590, 1180480, 1306960, 1506848, 1601026, 1652672, 1829744, 1883560, 2065840, 2152640, 2287180, 2613920, 3013696, 3202052, 3659488, 3767120, 4002565, 4131680, 4574360, 5227840, 6404104, 7318976, 7534240, 8005130, 8263360, 9148720, 12808208, 15068480, 16010260, 18297440, 25616416, 32020520, 36594880, 51232832, 64041040, 128082080, 256164160]

約数ペア:

[(1, 256164160), (2, 128082080), (4, 64041040), (5, 51232832), (7, 36594880), (8, 32020520), (10, 25616416), (14, 18297440), (16, 16010260), (17, 15068480), (20, 12808208), (28, 9148720), (31, 8263360), (32, 8005130), (34, 7534240), (35, 7318976), (40, 6404104), (49, 5227840), (56, 4574360), (62, 4131680), (64, 4002565), (68, 3767120), (70, 3659488), (80, 3202052), (85, 3013696), (98, 2613920), (112, 2287180), (119, 2152640), (124, 2065840), (136, 1883560), (140, 1829744), (155, 1652672), (160, 1601026), (170, 1506848), (196, 1306960), (217, 1180480), (224, 1143590), (238, 1076320), (245, 1045568), (248, 1032920), (272, 941780), (280, 914872), (310, 826336), (320, 800513), (340, 753424), (392, 653480), (434, 590240), (448, 571795), (476, 538160), (490, 522784), (496, 516460), (527, 486080), (544, 470890), (560, 457436), (595, 430528), (620, 413168), (680, 376712), (784, 326740), (833, 307520), (868, 295120), (952, 269080), (961, 266560), (980, 261392), (992, 258230), (1054, 243040), (1085, 236096), (1088, 235445), (1120, 228718), (1190, 215264), (1240, 206584), (1360, 188356), (1519, 168640), (1568, 163370), (1666, 153760), (1736, 147560), (1904, 134540), (1922, 133280), (1960, 130696), (1984, 129115), (2108, 121520), (2170, 118048), (2240, 114359), (2380, 107632), (2480, 103292), (2635, 97216), (2720, 94178), (3038, 84320), (3136, 81685), (3332, 76880), (3472, 73780), (3689, 69440), (3808, 67270), (3844, 66640), (3920, 65348), (4165, 61504), (4216, 60760), (4340, 59024), (4760, 53816), (4805, 53312), (4960, 51646), (5270, 48608), (5440, 47089), (6076, 42160), (6664, 38440), (6727, 38080), (6944, 36890), (7378, 34720), (7595, 33728), (7616, 33635), (7688, 33320), (7840, 32674), (8330, 30752), (8432, 30380), (8680, 29512), (9520, 26908), (9610, 26656), (9920, 25823), (10540, 24304), (12152, 21080), (13328, 19220), (13454, 19040), (13888, 18445), (14756, 17360), (15190, 16864), (15376, 16660), (15680, 16337)]