20928531

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{3917}}^1$

素因数の和:4070

約数の個数: 16

約数和(自身を含む): 30278304

約数和(自身を除く): 9349773

約数列:

[1, 3, 13, 39, 137, 411, 1781, 3917, 5343, 11751, 50921, 152763, 536629, 1609887, 6976177, 20928531]

約数ペア:

[(1, 20928531), (3, 6976177), (13, 1609887), (39, 536629), (137, 152763), (411, 50921), (1781, 11751), (3917, 5343)]