213781251

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{72053}}^1$

素因数の和:72122

約数の個数: 16

約数和(自身を含む): 304356096

約数和(自身を除く): 90574845

約数列:

[1, 3, 23, 43, 69, 129, 989, 2967, 72053, 216159, 1657219, 3098279, 4971657, 9294837, 71260417, 213781251]

約数ペア:

[(1, 213781251), (3, 71260417), (23, 9294837), (43, 4971657), (69, 3098279), (129, 1657219), (989, 216159), (2967, 72053)]