21715701

素因数分解:

$3^1\times 7^1\times {\mathrm{571}}^1\times {\mathrm{1811}}^1$

素因数の和:2392

約数の個数: 16

約数和(自身を含む): 33166848

約数和(自身を除く): 11451147

約数列:

[1, 3, 7, 21, 571, 1713, 1811, 3997, 5433, 11991, 12677, 38031, 1034081, 3102243, 7238567, 21715701]

約数ペア:

[(1, 21715701), (3, 7238567), (7, 3102243), (21, 1034081), (571, 38031), (1713, 12677), (1811, 11991), (3997, 5433)]