21558957

素因数分解:

$3^1\times 7^1\times {\mathrm{751}}^1\times {\mathrm{1367}}^1$

素因数の和:2128

約数の個数: 16

約数和(自身を含む): 32919552

約数和(自身を除く): 11360595

約数列:

[1, 3, 7, 21, 751, 1367, 2253, 4101, 5257, 9569, 15771, 28707, 1026617, 3079851, 7186319, 21558957]

約数ペア:

[(1, 21558957), (3, 7186319), (7, 3079851), (21, 1026617), (751, 28707), (1367, 15771), (2253, 9569), (4101, 5257)]