19982180

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{7867}}^1$

素因数の和:8003

約数の個数: 24

約数和(自身を含む): 42298368

約数和(自身を除く): 22316188

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 7867, 15734, 31468, 39335, 78670, 157340, 999109, 1998218, 3996436, 4995545, 9991090, 19982180]

約数ペア:

[(1, 19982180), (2, 9991090), (4, 4995545), (5, 3996436), (10, 1998218), (20, 999109), (127, 157340), (254, 78670), (508, 39335), (635, 31468), (1270, 15734), (2540, 7867)]