661605620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2544637}}^1$

素因数の和:2544659

約数の個数: 24

約数和(自身を含む): 1496247144

約数和(自身を除く): 834641524

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2544637, 5089274, 10178548, 12723185, 25446370, 33080281, 50892740, 66160562, 132321124, 165401405, 330802810, 661605620]

約数ペア:

[(1, 661605620), (2, 330802810), (4, 165401405), (5, 132321124), (10, 66160562), (13, 50892740), (20, 33080281), (26, 25446370), (52, 12723185), (65, 10178548), (130, 5089274), (260, 2544637)]