20719479

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{4517}}^1$

素因数の和:4670

約数の個数: 16

約数和(自身を含む): 30360960

約数和(自身を除く): 9641481

約数列:

[1, 3, 11, 33, 139, 417, 1529, 4517, 4587, 13551, 49687, 149061, 627863, 1883589, 6906493, 20719479]

約数ペア:

[(1, 20719479), (3, 6906493), (11, 1883589), (33, 627863), (139, 149061), (417, 49687), (1529, 13551), (4517, 4587)]