21130197

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{1229}}^1$

素因数の和:1764

約数の個数: 16

約数和(自身を含む): 30818880

約数和(自身を除く): 9688683

約数列:

[1, 3, 11, 33, 521, 1229, 1563, 3687, 5731, 13519, 17193, 40557, 640309, 1920927, 7043399, 21130197]

約数ペア:

[(1, 21130197), (3, 7043399), (11, 1920927), (33, 640309), (521, 40557), (1229, 17193), (1563, 13519), (3687, 5731)]