21162590

素因数分解:

$2^1\times 5^1\times {\mathrm{499}}^1\times {\mathrm{4241}}^1$

素因数の和:4747

約数の個数: 16

約数和(自身を含む): 38178000

約数和(自身を除く): 17015410

約数列:

[1, 2, 5, 10, 499, 998, 2495, 4241, 4990, 8482, 21205, 42410, 2116259, 4232518, 10581295, 21162590]

約数ペア:

[(1, 21162590), (2, 10581295), (5, 4232518), (10, 2116259), (499, 42410), (998, 21205), (2495, 8482), (4241, 4990)]