20421723

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{42281}}^1$

素因数の和:42314

約数の個数: 16

約数和(自身を含む): 32472576

約数和(自身を除く): 12050853

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 42281, 126843, 295967, 887901, 972463, 2917389, 6807241, 20421723]

約数ペア:

[(1, 20421723), (3, 6807241), (7, 2917389), (21, 972463), (23, 887901), (69, 295967), (161, 126843), (483, 42281)]