81162160

素因数分解:

$2^4\times 5^1\times {\mathrm{569}}^1\times {\mathrm{1783}}^1$

素因数の和:2365

約数の個数: 40

約数和(自身を含む): 189139680

約数和(自身を除く): 107977520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 569, 1138, 1783, 2276, 2845, 3566, 4552, 5690, 7132, 8915, 9104, 11380, 14264, 17830, 22760, 28528, 35660, 45520, 71320, 142640, 1014527, 2029054, 4058108, 5072635, 8116216, 10145270, 16232432, 20290540, 40581080, 81162160]

約数ペア:

[(1, 81162160), (2, 40581080), (4, 20290540), (5, 16232432), (8, 10145270), (10, 8116216), (16, 5072635), (20, 4058108), (40, 2029054), (80, 1014527), (569, 142640), (1138, 71320), (1783, 45520), (2276, 35660), (2845, 28528), (3566, 22760), (4552, 17830), (5690, 14264), (7132, 11380), (8915, 9104)]