20382280

素因数分解:

$2^3\times 5^1\times {\mathrm{509557}}^1$

素因数の和:509568

約数の個数: 16

約数和(自身を含む): 45860220

約数和(自身を除く): 25477940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509557, 1019114, 2038228, 2547785, 4076456, 5095570, 10191140, 20382280]

約数ペア:

[(1, 20382280), (2, 10191140), (4, 5095570), (5, 4076456), (8, 2547785), (10, 2038228), (20, 1019114), (40, 509557)]