657427940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2528569}}^1$

素因数の和:2528591

約数の個数: 24

約数和(自身を含む): 1486799160

約数和(自身を除く): 829371220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2528569, 5057138, 10114276, 12642845, 25285690, 32871397, 50571380, 65742794, 131485588, 164356985, 328713970, 657427940]

約数ペア:

[(1, 657427940), (2, 328713970), (4, 164356985), (5, 131485588), (10, 65742794), (13, 50571380), (20, 32871397), (26, 25285690), (52, 12642845), (65, 10114276), (130, 5057138), (260, 2528569)]