21281450

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{25037}}^1$

素因数の和:25066

約数の個数: 24

約数和(自身を含む): 41913612

約数和(自身を除く): 20632162

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 170, 425, 850, 25037, 50074, 125185, 250370, 425629, 625925, 851258, 1251850, 2128145, 4256290, 10640725, 21281450]

約数ペア:

[(1, 21281450), (2, 10640725), (5, 4256290), (10, 2128145), (17, 1251850), (25, 851258), (34, 625925), (50, 425629), (85, 250370), (170, 125185), (425, 50074), (850, 25037)]