81657218

素因数分解:

$2^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1\times {\mathrm{1229}}^1$

素因数の和:1609

約数の個数: 16

約数和(自身を含む): 123984000

約数和(自身を除く): 42326782

約数列:

[1, 2, 139, 239, 278, 478, 1229, 2458, 33221, 66442, 170831, 293731, 341662, 587462, 40828609, 81657218]

約数ペア:

[(1, 81657218), (2, 40828609), (139, 587462), (239, 341662), (278, 293731), (478, 170831), (1229, 66442), (2458, 33221)]