21939879

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{13721}}^1$

素因数の和:13778

約数の個数: 16

約数和(自身を含む): 32274144

約数和(自身を除く): 10334265

約数列:

[1, 3, 13, 39, 41, 123, 533, 1599, 13721, 41163, 178373, 535119, 562561, 1687683, 7313293, 21939879]

約数ペア:

[(1, 21939879), (3, 7313293), (13, 1687683), (39, 562561), (41, 535119), (123, 178373), (533, 41163), (1599, 13721)]