21840100

素因数分解:

$2^2\times 5^2\times {\mathrm{218401}}^1$

素因数の和:218415

約数の個数: 18

約数和(自身を含む): 47393234

約数和(自身を除く): 25553134

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 218401, 436802, 873604, 1092005, 2184010, 4368020, 5460025, 10920050, 21840100]

約数ペア:

[(1, 21840100), (2, 10920050), (4, 5460025), (5, 4368020), (10, 2184010), (20, 1092005), (25, 873604), (50, 436802), (100, 218401)]