81832580

素因数分解:

$2^2\times 5^1\times {\mathrm{1993}}^1\times {\mathrm{2053}}^1$

素因数の和:4055

約数の個数: 24

約数和(自身を含む): 172018392

約数和(自身を除く): 90185812

約数列:

[1, 2, 4, 5, 10, 20, 1993, 2053, 3986, 4106, 7972, 8212, 9965, 10265, 19930, 20530, 39860, 41060, 4091629, 8183258, 16366516, 20458145, 40916290, 81832580]

約数ペア:

[(1, 81832580), (2, 40916290), (4, 20458145), (5, 16366516), (10, 8183258), (20, 4091629), (1993, 41060), (2053, 39860), (3986, 20530), (4106, 19930), (7972, 10265), (8212, 9965)]