21814009

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{263}}^1$

素因数の和:345

約数の個数: 24

約数和(自身を含む): 27232128

約数和(自身を除く): 5418119

約数列:

[1, 7, 17, 41, 119, 263, 287, 289, 697, 1841, 2023, 4471, 4879, 10783, 11849, 31297, 75481, 76007, 82943, 183311, 532049, 1283177, 3116287, 21814009]

約数ペア:

[(1, 21814009), (7, 3116287), (17, 1283177), (41, 532049), (119, 183311), (263, 82943), (287, 76007), (289, 75481), (697, 31297), (1841, 11849), (2023, 10783), (4471, 4879)]