28157213

素因数分解:

$7^3\times {\mathrm{103}}^1\times {\mathrm{797}}^1$

素因数の和:921

約数の個数: 16

約数和(自身を含む): 33196800

約数和(自身を除く): 5039587

約数列:

[1, 7, 49, 103, 343, 721, 797, 5047, 5579, 35329, 39053, 82091, 273371, 574637, 4022459, 28157213]

約数ペア:

[(1, 28157213), (7, 4022459), (49, 574637), (103, 273371), (343, 82091), (721, 39053), (797, 35329), (5047, 5579)]