21868651

素因数分解:

$7^3\times {\mathrm{103}}^1\times {\mathrm{619}}^1$

素因数の和:743

約数の個数: 16

約数和(自身を含む): 25792000

約数和(自身を除く): 3923349

約数列:

[1, 7, 49, 103, 343, 619, 721, 4333, 5047, 30331, 35329, 63757, 212317, 446299, 3124093, 21868651]

約数ペア:

[(1, 21868651), (7, 3124093), (49, 446299), (103, 212317), (343, 63757), (619, 35329), (721, 30331), (4333, 5047)]