21570991

素因数分解:

${\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{1171}}^1$

素因数の和:1306

約数の個数: 12

約数和(自身を含む): 23592360

約数和(自身を除く): 2021369

約数列:

[1, 13, 109, 169, 1171, 1417, 15223, 18421, 127639, 197899, 1659307, 21570991]

約数ペア:

[(1, 21570991), (13, 1659307), (109, 197899), (169, 127639), (1171, 18421), (1417, 15223)]