20814921

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{18803}}^1$

素因数の和:18853

約数の個数: 16

約数和(自身を含む): 31590720

約数和(自身を除く): 10775799

約数列:

[1, 3, 9, 27, 41, 123, 369, 1107, 18803, 56409, 169227, 507681, 770923, 2312769, 6938307, 20814921]

約数ペア:

[(1, 20814921), (3, 6938307), (9, 2312769), (27, 770923), (41, 507681), (123, 169227), (369, 56409), (1107, 18803)]