19770040

素因数分解:

$2^3\times 5^1\times {\mathrm{494251}}^1$

素因数の和:494262

約数の個数: 16

約数和(自身を含む): 44482680

約数和(自身を除く): 24712640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 494251, 988502, 1977004, 2471255, 3954008, 4942510, 9885020, 19770040]

約数ペア:

[(1, 19770040), (2, 9885020), (4, 4942510), (5, 3954008), (8, 2471255), (10, 1977004), (20, 988502), (40, 494251)]