219680209

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{4253}}^1$

素因数の和:4464

約数の個数: 16

約数和(自身を含む): 258098688

約数和(自身を除く): 38418479

約数列:

[1, 7, 47, 157, 329, 1099, 4253, 7379, 29771, 51653, 199891, 667721, 1399237, 4674047, 31382887, 219680209]

約数ペア:

[(1, 219680209), (7, 31382887), (47, 4674047), (157, 1399237), (329, 667721), (1099, 199891), (4253, 51653), (7379, 29771)]