205128040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{937}}^1$

素因数の和:1382

約数の個数: 64

約数和(自身を含む): 498753360

約数和(自身を除く): 293625320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 421, 520, 842, 937, 1684, 1874, 2105, 3368, 3748, 4210, 4685, 5473, 7496, 8420, 9370, 10946, 12181, 16840, 18740, 21892, 24362, 27365, 37480, 43784, 48724, 54730, 60905, 97448, 109460, 121810, 218920, 243620, 394477, 487240, 788954, 1577908, 1972385, 3155816, 3944770, 5128201, 7889540, 10256402, 15779080, 20512804, 25641005, 41025608, 51282010, 102564020, 205128040]

約数ペア:

[(1, 205128040), (2, 102564020), (4, 51282010), (5, 41025608), (8, 25641005), (10, 20512804), (13, 15779080), (20, 10256402), (26, 7889540), (40, 5128201), (52, 3944770), (65, 3155816), (104, 1972385), (130, 1577908), (260, 788954), (421, 487240), (520, 394477), (842, 243620), (937, 218920), (1684, 121810), (1874, 109460), (2105, 97448), (3368, 60905), (3748, 54730), (4210, 48724), (4685, 43784), (5473, 37480), (7496, 27365), (8420, 24362), (9370, 21892), (10946, 18740), (12181, 16840)]