21912371

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:335

約数の個数: 24

約数和(自身を含む): 26088480

約数和(自身を除く): 4176109

約数列:

[1, 13, 17, 29, 169, 221, 263, 377, 493, 2873, 3419, 4471, 4901, 6409, 7627, 44447, 58123, 83317, 99151, 129659, 755599, 1288963, 1685567, 21912371]

約数ペア:

[(1, 21912371), (13, 1685567), (17, 1288963), (29, 755599), (169, 129659), (221, 99151), (263, 83317), (377, 58123), (493, 44447), (2873, 7627), (3419, 6409), (4471, 4901)]