19996780

素因数分解:

$2^2\times 5^1\times {\mathrm{283}}^1\times {\mathrm{3533}}^1$

素因数の和:3825

約数の個数: 24

約数和(自身を含む): 42153552

約数和(自身を除く): 22156772

約数列:

[1, 2, 4, 5, 10, 20, 283, 566, 1132, 1415, 2830, 3533, 5660, 7066, 14132, 17665, 35330, 70660, 999839, 1999678, 3999356, 4999195, 9998390, 19996780]

約数ペア:

[(1, 19996780), (2, 9998390), (4, 4999195), (5, 3999356), (10, 1999678), (20, 999839), (283, 70660), (566, 35330), (1132, 17665), (1415, 14132), (2830, 7066), (3533, 5660)]