20689207

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{3019}}^1$

素因数の和:3126

約数の個数: 16

約数和(自身を含む): 26092800

約数和(自身を除く): 5403593

約数列:

[1, 7, 11, 77, 89, 623, 979, 3019, 6853, 21133, 33209, 232463, 268691, 1880837, 2955601, 20689207]

約数ペア:

[(1, 20689207), (7, 2955601), (11, 1880837), (77, 268691), (89, 232463), (623, 33209), (979, 21133), (3019, 6853)]