28985140

素因数分解:

$2^2\times 5^1\times {\mathrm{811}}^1\times {\mathrm{1787}}^1$

素因数の和:2607

約数の個数: 24

約数和(自身を含む): 60977952

約数和(自身を除く): 31992812

約数列:

[1, 2, 4, 5, 10, 20, 811, 1622, 1787, 3244, 3574, 4055, 7148, 8110, 8935, 16220, 17870, 35740, 1449257, 2898514, 5797028, 7246285, 14492570, 28985140]

約数ペア:

[(1, 28985140), (2, 14492570), (4, 7246285), (5, 5797028), (10, 2898514), (20, 1449257), (811, 35740), (1622, 17870), (1787, 16220), (3244, 8935), (3574, 8110), (4055, 7148)]