4002980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2819}}^1$

素因数の和:2899

約数の個数: 24

約数和(自身を含む): 8527680

約数和(自身を除く): 4524700

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 2819, 5638, 11276, 14095, 28190, 56380, 200149, 400298, 800596, 1000745, 2001490, 4002980]

約数ペア:

[(1, 4002980), (2, 2001490), (4, 1000745), (5, 800596), (10, 400298), (20, 200149), (71, 56380), (142, 28190), (284, 14095), (355, 11276), (710, 5638), (1420, 2819)]