20640408

素因数分解:

$2^3\times 3^1\times {\mathrm{709}}^1\times {\mathrm{1213}}^1$

素因数の和:1931

約数の個数: 32

約数和(自身を含む): 51716400

約数和(自身を除く): 31075992

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 709, 1213, 1418, 2127, 2426, 2836, 3639, 4254, 4852, 5672, 7278, 8508, 9704, 14556, 17016, 29112, 860017, 1720034, 2580051, 3440068, 5160102, 6880136, 10320204, 20640408]

約数ペア:

[(1, 20640408), (2, 10320204), (3, 6880136), (4, 5160102), (6, 3440068), (8, 2580051), (12, 1720034), (24, 860017), (709, 29112), (1213, 17016), (1418, 14556), (2127, 9704), (2426, 8508), (2836, 7278), (3639, 5672), (4254, 4852)]