20201240

素因数分解:

$2^3\times 5^1\times {\mathrm{505031}}^1$

素因数の和:505042

約数の個数: 16

約数和(自身を含む): 45452880

約数和(自身を除く): 25251640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 505031, 1010062, 2020124, 2525155, 4040248, 5050310, 10100620, 20201240]

約数ペア:

[(1, 20201240), (2, 10100620), (4, 5050310), (5, 4040248), (8, 2525155), (10, 2020124), (20, 1010062), (40, 505031)]