21207347

素因数分解:

$7^3\times {\mathrm{17}}^1\times {\mathrm{3637}}^1$

素因数の和:3675

約数の個数: 16

約数和(自身を含む): 26193600

約数和(自身を除く): 4986253

約数列:

[1, 7, 17, 49, 119, 343, 833, 3637, 5831, 25459, 61829, 178213, 432803, 1247491, 3029621, 21207347]

約数ペア:

[(1, 21207347), (7, 3029621), (17, 1247491), (49, 432803), (119, 178213), (343, 61829), (833, 25459), (3637, 5831)]