66495640

素因数分解:

$2^3\times 5^1\times {\mathrm{1109}}^1\times {\mathrm{1499}}^1$

素因数の和:2619

約数の個数: 32

約数和(自身を含む): 149850000

約数和(自身を除く): 83354360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1109, 1499, 2218, 2998, 4436, 5545, 5996, 7495, 8872, 11090, 11992, 14990, 22180, 29980, 44360, 59960, 1662391, 3324782, 6649564, 8311955, 13299128, 16623910, 33247820, 66495640]

約数ペア:

[(1, 66495640), (2, 33247820), (4, 16623910), (5, 13299128), (8, 8311955), (10, 6649564), (20, 3324782), (40, 1662391), (1109, 59960), (1499, 44360), (2218, 29980), (2998, 22180), (4436, 14990), (5545, 11992), (5996, 11090), (7495, 8872)]