21356777

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{2357}}^1$

素因数の和:2428

約数の個数: 16

約数和(自身を含む): 24957072

約数和(自身を除く): 3600295

約数列:

[1, 13, 17, 41, 221, 533, 697, 2357, 9061, 30641, 40069, 96637, 520897, 1256281, 1642829, 21356777]

約数ペア:

[(1, 21356777), (13, 1642829), (17, 1256281), (41, 520897), (221, 96637), (533, 40069), (697, 30641), (2357, 9061)]