81043940

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{37871}}^1$

素因数の和:37987

約数の個数: 24

約数和(自身を含む): 171787392

約数和(自身を除く): 90743452

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 37871, 75742, 151484, 189355, 378710, 757420, 4052197, 8104394, 16208788, 20260985, 40521970, 81043940]

約数ペア:

[(1, 81043940), (2, 40521970), (4, 20260985), (5, 16208788), (10, 8104394), (20, 4052197), (107, 757420), (214, 378710), (428, 189355), (535, 151484), (1070, 75742), (2140, 37871)]