20973169

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{1531}}^1$

素因数の和:1660

約数の個数: 16

約数和(自身を含む): 25492480

約数和(自身を除く): 4519311

約数列:

[1, 7, 19, 103, 133, 721, 1531, 1957, 10717, 13699, 29089, 157693, 203623, 1103851, 2996167, 20973169]

約数ペア:

[(1, 20973169), (7, 2996167), (19, 1103851), (103, 203623), (133, 157693), (721, 29089), (1531, 13699), (1957, 10717)]