20640697

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{1481}}^1$

素因数の和:1680

約数の個数: 16

約数和(自身を含む): 25893504

約数和(自身を除く): 5252807

約数列:

[1, 7, 11, 77, 181, 1267, 1481, 1991, 10367, 13937, 16291, 114037, 268061, 1876427, 2948671, 20640697]

約数ペア:

[(1, 20640697), (7, 2948671), (11, 1876427), (77, 268061), (181, 114037), (1267, 16291), (1481, 13937), (1991, 10367)]