218225620

素因数分解:

$2^2\times 5^1\times {\mathrm{1381}}^1\times {\mathrm{7901}}^1$

素因数の和:9291

約数の個数: 24

約数和(自身を含む): 458663688

約数和(自身を除く): 240438068

約数列:

[1, 2, 4, 5, 10, 20, 1381, 2762, 5524, 6905, 7901, 13810, 15802, 27620, 31604, 39505, 79010, 158020, 10911281, 21822562, 43645124, 54556405, 109112810, 218225620]

約数ペア:

[(1, 218225620), (2, 109112810), (4, 54556405), (5, 43645124), (10, 21822562), (20, 10911281), (1381, 158020), (2762, 79010), (5524, 39505), (6905, 31604), (7901, 27620), (13810, 15802)]