31386159

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{3803}}^1$

素因数の和:3947

約数の個数: 24

約数和(自身を含む): 52221312

約数和(自身を除く): 20835153

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2751, 3803, 8253, 11409, 26621, 34227, 79863, 239589, 498193, 1494579, 3487351, 4483737, 10462053, 31386159]

約数ペア:

[(1, 31386159), (3, 10462053), (7, 4483737), (9, 3487351), (21, 1494579), (63, 498193), (131, 239589), (393, 79863), (917, 34227), (1179, 26621), (2751, 11409), (3803, 8253)]