815620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3137}}^1$

素因数の和:3159

約数の個数: 24

約数和(自身を含む): 1845144

約数和(自身を除く): 1029524

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 3137, 6274, 12548, 15685, 31370, 40781, 62740, 81562, 163124, 203905, 407810, 815620]

約数ペア:

[(1, 815620), (2, 407810), (4, 203905), (5, 163124), (10, 81562), (13, 62740), (20, 40781), (26, 31370), (52, 15685), (65, 12548), (130, 6274), (260, 3137)]