20739585

素因数分解:

$3^1\times 5^1\times {\mathrm{647}}^1\times {\mathrm{2137}}^1$

素因数の和:2792

約数の個数: 16

約数和(自身を含む): 33250176

約数和(自身を除く): 12510591

約数列:

[1, 3, 5, 15, 647, 1941, 2137, 3235, 6411, 9705, 10685, 32055, 1382639, 4147917, 6913195, 20739585]

約数ペア:

[(1, 20739585), (3, 6913195), (5, 4147917), (15, 1382639), (647, 32055), (1941, 10685), (2137, 9705), (3235, 6411)]