19896860

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{9127}}^1$

素因数の和:9245

約数の個数: 24

約数和(自身を含む): 42171360

約数和(自身を除く): 22274500

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 9127, 18254, 36508, 45635, 91270, 182540, 994843, 1989686, 3979372, 4974215, 9948430, 19896860]

約数ペア:

[(1, 19896860), (2, 9948430), (4, 4974215), (5, 3979372), (10, 1989686), (20, 994843), (109, 182540), (218, 91270), (436, 45635), (545, 36508), (1090, 18254), (2180, 9127)]