81032180

素因数分解:

$2^2\times 5^1\times {\mathrm{1571}}^1\times {\mathrm{2579}}^1$

素因数の和:4159

約数の個数: 24

約数和(自身を含む): 170341920

約数和(自身を除く): 89309740

約数列:

[1, 2, 4, 5, 10, 20, 1571, 2579, 3142, 5158, 6284, 7855, 10316, 12895, 15710, 25790, 31420, 51580, 4051609, 8103218, 16206436, 20258045, 40516090, 81032180]

約数ペア:

[(1, 81032180), (2, 40516090), (4, 20258045), (5, 16206436), (10, 8103218), (20, 4051609), (1571, 51580), (2579, 31420), (3142, 25790), (5158, 15710), (6284, 12895), (7855, 10316)]