80636840

素因数分解:

$2^3\times 5^1\times {\mathrm{2015921}}^1$

素因数の和:2015932

約数の個数: 16

約数和(自身を含む): 181432980

約数和(自身を除く): 100796140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2015921, 4031842, 8063684, 10079605, 16127368, 20159210, 40318420, 80636840]

約数ペア:

[(1, 80636840), (2, 40318420), (4, 20159210), (5, 16127368), (8, 10079605), (10, 8063684), (20, 4031842), (40, 2015921)]