20487850

素因数分解:

$2^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{4057}}^1$

素因数の和:4170

約数の個数: 24

約数和(自身を含む): 38494188

約数和(自身を除く): 18006338

約数列:

[1, 2, 5, 10, 25, 50, 101, 202, 505, 1010, 2525, 4057, 5050, 8114, 20285, 40570, 101425, 202850, 409757, 819514, 2048785, 4097570, 10243925, 20487850]

約数ペア:

[(1, 20487850), (2, 10243925), (5, 4097570), (10, 2048785), (25, 819514), (50, 409757), (101, 202850), (202, 101425), (505, 40570), (1010, 20285), (2525, 8114), (4057, 5050)]