31880511

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{523}}^1$

素因数の和:1063

約数の個数: 24

約数和(自身を含む): 49782096

約数和(自身を除く): 17901585

約数列:

[1, 3, 9, 13, 39, 117, 521, 523, 1563, 1569, 4689, 4707, 6773, 6799, 20319, 20397, 60957, 61191, 272483, 817449, 2452347, 3542279, 10626837, 31880511]

約数ペア:

[(1, 31880511), (3, 10626837), (9, 3542279), (13, 2452347), (39, 817449), (117, 272483), (521, 61191), (523, 60957), (1563, 20397), (1569, 20319), (4689, 6799), (4707, 6773)]