21212590

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43291}}^1$

素因数の和:43312

約数の個数: 24

約数和(自身を含む): 44417592

約数和(自身を除く): 23205002

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 43291, 86582, 216455, 303037, 432910, 606074, 1515185, 2121259, 3030370, 4242518, 10606295, 21212590]

約数ペア:

[(1, 21212590), (2, 10606295), (5, 4242518), (7, 3030370), (10, 2121259), (14, 1515185), (35, 606074), (49, 432910), (70, 303037), (98, 216455), (245, 86582), (490, 43291)]