15661221

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{811}}^1$

素因数の和:1012

約数の個数: 16

約数和(自身を含む): 21553728

約数和(自身を除く): 5892507

約数列:

[1, 3, 41, 123, 157, 471, 811, 2433, 6437, 19311, 33251, 99753, 127327, 381981, 5220407, 15661221]

約数ペア:

[(1, 15661221), (3, 5220407), (41, 381981), (123, 127327), (157, 99753), (471, 33251), (811, 19311), (2433, 6437)]