81172180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{213611}}^1$

素因数の和:213639

約数の個数: 24

約数和(自身を含む): 179434080

約数和(自身を除く): 98261900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 213611, 427222, 854444, 1068055, 2136110, 4058609, 4272220, 8117218, 16234436, 20293045, 40586090, 81172180]

約数ペア:

[(1, 81172180), (2, 40586090), (4, 20293045), (5, 16234436), (10, 8117218), (19, 4272220), (20, 4058609), (38, 2136110), (76, 1068055), (95, 854444), (190, 427222), (380, 213611)]