21558309

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{359}}^1\times {\mathrm{541}}^1$

素因数の和:940

約数の個数: 16

約数和(自身を含む): 29658240

約数和(自身を除く): 8099931

約数列:

[1, 3, 37, 111, 359, 541, 1077, 1623, 13283, 20017, 39849, 60051, 194219, 582657, 7186103, 21558309]

約数ペア:

[(1, 21558309), (3, 7186103), (37, 582657), (111, 194219), (359, 60051), (541, 39849), (1077, 20017), (1623, 13283)]