81735380

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{4871}}^1$

素因数の和:5719

約数の個数: 24

約数和(自身を含む): 171884160

約数和(自身を除く): 90148780

約数列:

[1, 2, 4, 5, 10, 20, 839, 1678, 3356, 4195, 4871, 8390, 9742, 16780, 19484, 24355, 48710, 97420, 4086769, 8173538, 16347076, 20433845, 40867690, 81735380]

約数ペア:

[(1, 81735380), (2, 40867690), (4, 20433845), (5, 16347076), (10, 8173538), (20, 4086769), (839, 97420), (1678, 48710), (3356, 24355), (4195, 19484), (4871, 16780), (8390, 9742)]