199910840

素因数分解:

$2^3\times 5^1\times {\mathrm{4997771}}^1$

素因数の和:4997782

約数の個数: 16

約数和(自身を含む): 449799480

約数和(自身を除く): 249888640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4997771, 9995542, 19991084, 24988855, 39982168, 49977710, 99955420, 199910840]

約数ペア:

[(1, 199910840), (2, 99955420), (4, 49977710), (5, 39982168), (8, 24988855), (10, 19991084), (20, 9995542), (40, 4997771)]