28780557

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{25447}}^1$

素因数の和:25492

約数の個数: 16

約数和(自身を含む): 42752640

約数和(自身を除く): 13972083

約数列:

[1, 3, 13, 29, 39, 87, 377, 1131, 25447, 76341, 330811, 737963, 992433, 2213889, 9593519, 28780557]

約数ペア:

[(1, 28780557), (3, 9593519), (13, 2213889), (29, 992433), (39, 737963), (87, 330811), (377, 76341), (1131, 25447)]