21981225119

素因数分解:

$7^2\times {\mathrm{4111}}^1\times {\mathrm{109121}}^1$

素因数の和:113246

約数の個数: 12

約数和(自身を含む): 25576450848

約数和(自身を除く): 3595225729

約数列:

[1, 7, 49, 4111, 28777, 109121, 201439, 763847, 5346929, 448596431, 3140175017, 21981225119]

約数ペア:

[(1, 21981225119), (7, 3140175017), (49, 448596431), (4111, 5346929), (28777, 763847), (109121, 201439)]