213885820

素因数分解:

$2^2\times 5^1\times {\mathrm{2609}}^1\times {\mathrm{4099}}^1$

素因数の和:6717

約数の個数: 24

約数和(自身を含む): 449442000

約数和(自身を除く): 235556180

約数列:

[1, 2, 4, 5, 10, 20, 2609, 4099, 5218, 8198, 10436, 13045, 16396, 20495, 26090, 40990, 52180, 81980, 10694291, 21388582, 42777164, 53471455, 106942910, 213885820]

約数ペア:

[(1, 213885820), (2, 106942910), (4, 53471455), (5, 42777164), (10, 21388582), (20, 10694291), (2609, 81980), (4099, 52180), (5218, 40990), (8198, 26090), (10436, 20495), (13045, 16396)]