21260121

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{1151}}^1$

素因数の和:1332

約数の個数: 16

約数和(自身を含む): 29196288

約数和(自身を除く): 7936167

約数列:

[1, 3, 47, 131, 141, 393, 1151, 3453, 6157, 18471, 54097, 150781, 162291, 452343, 7086707, 21260121]

約数ペア:

[(1, 21260121), (3, 7086707), (47, 452343), (131, 162291), (141, 150781), (393, 54097), (1151, 18471), (3453, 6157)]