21486561

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{233}}^1\times {\mathrm{521}}^1$

素因数の和:816

約数の個数: 16

約数和(自身を含む): 29315520

約数和(自身を除く): 7828959

約数列:

[1, 3, 59, 177, 233, 521, 699, 1563, 13747, 30739, 41241, 92217, 121393, 364179, 7162187, 21486561]

約数ペア:

[(1, 21486561), (3, 7162187), (59, 364179), (177, 121393), (233, 92217), (521, 41241), (699, 30739), (1563, 13747)]