21081020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{62003}}^1$

素因数の和:62029

約数の個数: 24

約数和(自身を含む): 46875024

約数和(自身を除く): 25794004

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 62003, 124006, 248012, 310015, 620030, 1054051, 1240060, 2108102, 4216204, 5270255, 10540510, 21081020]

約数ペア:

[(1, 21081020), (2, 10540510), (4, 5270255), (5, 4216204), (10, 2108102), (17, 1240060), (20, 1054051), (34, 620030), (68, 310015), (85, 248012), (170, 124006), (340, 62003)]