221997309

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{1231}}^1\times {\mathrm{1279}}^1$

素因数の和:2560

約数の個数: 16

約数和(自身を含む): 302776320

約数和(自身を除く): 80779011

約数列:

[1, 3, 47, 141, 1231, 1279, 3693, 3837, 57857, 60113, 173571, 180339, 1574449, 4723347, 73999103, 221997309]

約数ペア:

[(1, 221997309), (3, 73999103), (47, 4723347), (141, 1574449), (1231, 180339), (1279, 173571), (3693, 60113), (3837, 57857)]