20909541

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{6949}}^1$

素因数の和:7028

約数の個数: 16

約数和(自身を含む): 30024000

約数和(自身を除く): 9114459

約数列:

[1, 3, 17, 51, 59, 177, 1003, 3009, 6949, 20847, 118133, 354399, 409991, 1229973, 6969847, 20909541]

約数ペア:

[(1, 20909541), (3, 6969847), (17, 1229973), (51, 409991), (59, 354399), (177, 118133), (1003, 20847), (3009, 6949)]