18787869

素因数分解:

$3^4\times {\mathrm{163}}^1\times {\mathrm{1423}}^1$

素因数の和:1598

約数の個数: 20

約数和(自身を含む): 28257856

約数和(自身を除く): 9469987

約数列:

[1, 3, 9, 27, 81, 163, 489, 1423, 1467, 4269, 4401, 12807, 13203, 38421, 115263, 231949, 695847, 2087541, 6262623, 18787869]

約数ペア:

[(1, 18787869), (3, 6262623), (9, 2087541), (27, 695847), (81, 231949), (163, 115263), (489, 38421), (1423, 13203), (1467, 12807), (4269, 4401)]