40409020

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{4049}}^1$

素因数の和:4557

約数の個数: 24

約数和(自身を含む): 85050000

約数和(自身を除く): 44640980

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1996, 2495, 4049, 4990, 8098, 9980, 16196, 20245, 40490, 80980, 2020451, 4040902, 8081804, 10102255, 20204510, 40409020]

約数ペア:

[(1, 40409020), (2, 20204510), (4, 10102255), (5, 8081804), (10, 4040902), (20, 2020451), (499, 80980), (998, 40490), (1996, 20245), (2495, 16196), (4049, 9980), (4990, 8098)]