28427690

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{40039}}^1$

素因数の和:40117

約数の個数: 16

約数和(自身を含む): 51891840

約数和(自身を除く): 23464150

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 40039, 80078, 200195, 400390, 2842769, 5685538, 14213845, 28427690]

約数ペア:

[(1, 28427690), (2, 14213845), (5, 5685538), (10, 2842769), (71, 400390), (142, 200195), (355, 80078), (710, 40039)]