258698960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{248749}}^1$

素因数の和:248775

約数の個数: 40

約数和(自身を含む): 647745000

約数和(自身を除く): 389046040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 248749, 497498, 994996, 1243745, 1989992, 2487490, 3233737, 3979984, 4974980, 6467474, 9949960, 12934948, 16168685, 19899920, 25869896, 32337370, 51739792, 64674740, 129349480, 258698960]

約数ペア:

[(1, 258698960), (2, 129349480), (4, 64674740), (5, 51739792), (8, 32337370), (10, 25869896), (13, 19899920), (16, 16168685), (20, 12934948), (26, 9949960), (40, 6467474), (52, 4974980), (65, 3979984), (80, 3233737), (104, 2487490), (130, 1989992), (208, 1243745), (260, 994996), (520, 497498), (1040, 248749)]