20410100

素因数分解:

$2^2\times 5^2\times {\mathrm{204101}}^1$

素因数の和:204115

約数の個数: 18

約数和(自身を含む): 44290134

約数和(自身を除く): 23880034

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 204101, 408202, 816404, 1020505, 2041010, 4082020, 5102525, 10205050, 20410100]

約数ペア:

[(1, 20410100), (2, 10205050), (4, 5102525), (5, 4082020), (10, 2041010), (20, 1020505), (25, 816404), (50, 408202), (100, 204101)]