211481740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{245909}}^1$

素因数の和:245961

約数の個数: 24

約数和(自身を含む): 454441680

約数和(自身を除く): 242959940

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 245909, 491818, 983636, 1229545, 2459090, 4918180, 10574087, 21148174, 42296348, 52870435, 105740870, 211481740]

約数ペア:

[(1, 211481740), (2, 105740870), (4, 52870435), (5, 42296348), (10, 21148174), (20, 10574087), (43, 4918180), (86, 2459090), (172, 1229545), (215, 983636), (430, 491818), (860, 245909)]