78808040

素因数分解:

$2^3\times 5^1\times {\mathrm{1970201}}^1$

素因数の和:1970212

約数の個数: 16

約数和(自身を含む): 177318180

約数和(自身を除く): 98510140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1970201, 3940402, 7880804, 9851005, 15761608, 19702010, 39404020, 78808040]

約数ペア:

[(1, 78808040), (2, 39404020), (4, 19702010), (5, 15761608), (8, 9851005), (10, 7880804), (20, 3940402), (40, 1970201)]