199887620

素因数分解:

$2^2\times 5^1\times {\mathrm{2273}}^1\times {\mathrm{4397}}^1$

素因数の和:6679

約数の個数: 24

約数和(自身を含む): 420044184

約数和(自身を除く): 220156564

約数列:

[1, 2, 4, 5, 10, 20, 2273, 4397, 4546, 8794, 9092, 11365, 17588, 21985, 22730, 43970, 45460, 87940, 9994381, 19988762, 39977524, 49971905, 99943810, 199887620]

約数ペア:

[(1, 199887620), (2, 99943810), (4, 49971905), (5, 39977524), (10, 19988762), (20, 9994381), (2273, 87940), (4397, 45460), (4546, 43970), (8794, 22730), (9092, 21985), (11365, 17588)]