636704080

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1\times {\mathrm{311}}^1$

素因数の和:644

約数の個数: 80

約数和(自身を含む): 1503725184

約数和(自身を除く): 867021104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 163, 311, 314, 326, 622, 628, 652, 785, 815, 1244, 1256, 1304, 1555, 1570, 1630, 2488, 2512, 2608, 3110, 3140, 3260, 4976, 6220, 6280, 6520, 12440, 12560, 13040, 24880, 25591, 48827, 50693, 51182, 97654, 101386, 102364, 127955, 195308, 202772, 204728, 244135, 253465, 255910, 390616, 405544, 409456, 488270, 506930, 511820, 781232, 811088, 976540, 1013860, 1023640, 1953080, 2027720, 2047280, 3906160, 4055440, 7958801, 15917602, 31835204, 39794005, 63670408, 79588010, 127340816, 159176020, 318352040, 636704080]

約数ペア:

[(1, 636704080), (2, 318352040), (4, 159176020), (5, 127340816), (8, 79588010), (10, 63670408), (16, 39794005), (20, 31835204), (40, 15917602), (80, 7958801), (157, 4055440), (163, 3906160), (311, 2047280), (314, 2027720), (326, 1953080), (622, 1023640), (628, 1013860), (652, 976540), (785, 811088), (815, 781232), (1244, 511820), (1256, 506930), (1304, 488270), (1555, 409456), (1570, 405544), (1630, 390616), (2488, 255910), (2512, 253465), (2608, 244135), (3110, 204728), (3140, 202772), (3260, 195308), (4976, 127955), (6220, 102364), (6280, 101386), (6520, 97654), (12440, 51182), (12560, 50693), (13040, 48827), (24880, 25591)]