81811160

素因数分解:

$2^3\times 5^1\times {\mathrm{859}}^1\times {\mathrm{2381}}^1$

素因数の和:3251

約数の個数: 32

約数和(自身を含む): 184366800

約数和(自身を除く): 102555640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 859, 1718, 2381, 3436, 4295, 4762, 6872, 8590, 9524, 11905, 17180, 19048, 23810, 34360, 47620, 95240, 2045279, 4090558, 8181116, 10226395, 16362232, 20452790, 40905580, 81811160]

約数ペア:

[(1, 81811160), (2, 40905580), (4, 20452790), (5, 16362232), (8, 10226395), (10, 8181116), (20, 4090558), (40, 2045279), (859, 95240), (1718, 47620), (2381, 34360), (3436, 23810), (4295, 19048), (4762, 17180), (6872, 11905), (8590, 9524)]