18262220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22271}}^1$

素因数の和:22321

約数の個数: 24

約数和(自身を含む): 39287808

約数和(自身を除く): 21025588

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22271, 44542, 89084, 111355, 222710, 445420, 913111, 1826222, 3652444, 4565555, 9131110, 18262220]

約数ペア:

[(1, 18262220), (2, 9131110), (4, 4565555), (5, 3652444), (10, 1826222), (20, 913111), (41, 445420), (82, 222710), (164, 111355), (205, 89084), (410, 44542), (820, 22271)]