21061180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21491}}^1$

素因数の和:21514

約数の個数: 36

約数和(自身を含む): 51451848

約数和(自身を除く): 30390668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21491, 42982, 85964, 107455, 150437, 214910, 300874, 429820, 601748, 752185, 1053059, 1504370, 2106118, 3008740, 4212236, 5265295, 10530590, 21061180]

約数ペア:

[(1, 21061180), (2, 10530590), (4, 5265295), (5, 4212236), (7, 3008740), (10, 2106118), (14, 1504370), (20, 1053059), (28, 752185), (35, 601748), (49, 429820), (70, 300874), (98, 214910), (140, 150437), (196, 107455), (245, 85964), (490, 42982), (980, 21491)]