20429025

素因数分解:

$3^1\times 5^2\times {\mathrm{421}}^1\times {\mathrm{647}}^1$

素因数の和:1081

約数の個数: 24

約数和(自身を含む): 33908544

約数和(自身を除く): 13479519

約数列:

[1, 3, 5, 15, 25, 75, 421, 647, 1263, 1941, 2105, 3235, 6315, 9705, 10525, 16175, 31575, 48525, 272387, 817161, 1361935, 4085805, 6809675, 20429025]

約数ペア:

[(1, 20429025), (3, 6809675), (5, 4085805), (15, 1361935), (25, 817161), (75, 272387), (421, 48525), (647, 31575), (1263, 16175), (1941, 10525), (2105, 9705), (3235, 6315)]