20187231

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{1657}}^1$

素因数の和:1822

約数の個数: 16

約数和(自身を含む): 28013568

約数和(自身を除く): 7826337

約数列:

[1, 3, 31, 93, 131, 393, 1657, 4061, 4971, 12183, 51367, 154101, 217067, 651201, 6729077, 20187231]

約数ペア:

[(1, 20187231), (3, 6729077), (31, 651201), (93, 217067), (131, 154101), (393, 51367), (1657, 12183), (4061, 4971)]