21118376

素因数分解:

$2^3\times {\mathrm{107}}^1\times {\mathrm{24671}}^1$

素因数の和:24784

約数の個数: 16

約数和(自身を含む): 39968640

約数和(自身を除く): 18850264

約数列:

[1, 2, 4, 8, 107, 214, 428, 856, 24671, 49342, 98684, 197368, 2639797, 5279594, 10559188, 21118376]

約数ペア:

[(1, 21118376), (2, 10559188), (4, 5279594), (8, 2639797), (107, 197368), (214, 98684), (428, 49342), (856, 24671)]