21260915

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{11279}}^1$

素因数の和:11326

約数の個数: 16

約数和(自身を含む): 28425600

約数和(自身を除く): 7164685

約数列:

[1, 5, 13, 29, 65, 145, 377, 1885, 11279, 56395, 146627, 327091, 733135, 1635455, 4252183, 21260915]

約数ペア:

[(1, 21260915), (5, 4252183), (13, 1635455), (29, 733135), (65, 327091), (145, 146627), (377, 56395), (1885, 11279)]