21920811

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{4231}}^1$

素因数の和:4402

約数の個数: 16

約数和(自身を含む): 32095488

約数和(自身を除く): 10174677

約数列:

[1, 3, 11, 33, 157, 471, 1727, 4231, 5181, 12693, 46541, 139623, 664267, 1992801, 7306937, 21920811]

約数ペア:

[(1, 21920811), (3, 7306937), (11, 1992801), (33, 664267), (157, 139623), (471, 46541), (1727, 12693), (4231, 5181)]