81663860

素因数分解:

$2^2\times 5^1\times {\mathrm{613}}^1\times {\mathrm{6661}}^1$

素因数の和:7283

約数の個数: 24

約数和(自身を含む): 171799656

約数和(自身を除く): 90135796

約数列:

[1, 2, 4, 5, 10, 20, 613, 1226, 2452, 3065, 6130, 6661, 12260, 13322, 26644, 33305, 66610, 133220, 4083193, 8166386, 16332772, 20415965, 40831930, 81663860]

約数ペア:

[(1, 81663860), (2, 40831930), (4, 20415965), (5, 16332772), (10, 8166386), (20, 4083193), (613, 133220), (1226, 66610), (2452, 33305), (3065, 26644), (6130, 13322), (6661, 12260)]