66438804940

素因数分解:

$2^2\times 5^1\times {\mathrm{2381}}^1\times {\mathrm{1395187}}^1$

素因数の和:1397577

約数の個数: 24

約数和(自身を含む): 139580188272

約数和(自身を除く): 73141383332

約数列:

[1, 2, 4, 5, 10, 20, 2381, 4762, 9524, 11905, 23810, 47620, 1395187, 2790374, 5580748, 6975935, 13951870, 27903740, 3321940247, 6643880494, 13287760988, 16609701235, 33219402470, 66438804940]

約数ペア:

[(1, 66438804940), (2, 33219402470), (4, 16609701235), (5, 13287760988), (10, 6643880494), (20, 3321940247), (2381, 27903740), (4762, 13951870), (9524, 6975935), (11905, 5580748), (23810, 2790374), (47620, 1395187)]