20953191

素因数分解:

$3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{7283}}^1$

素因数の和:7430

約数の個数: 16

約数和(自身を含む): 32166144

約数和(自身を除く): 11212953

約数列:

[1, 3, 7, 21, 137, 411, 959, 2877, 7283, 21849, 50981, 152943, 997771, 2993313, 6984397, 20953191]

約数ペア:

[(1, 20953191), (3, 6984397), (7, 2993313), (21, 997771), (137, 152943), (411, 50981), (959, 21849), (2877, 7283)]