20040100

素因数分解:

$2^2\times 5^2\times {\mathrm{200401}}^1$

素因数の和:200415

約数の個数: 18

約数和(自身を含む): 43487234

約数和(自身を除く): 23447134

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 200401, 400802, 801604, 1002005, 2004010, 4008020, 5010025, 10020050, 20040100]

約数ペア:

[(1, 20040100), (2, 10020050), (4, 5010025), (5, 4008020), (10, 2004010), (20, 1002005), (25, 801604), (50, 400802), (100, 200401)]