81363860

素因数分解:

$2^2\times 5^1\times {\mathrm{1867}}^1\times {\mathrm{2179}}^1$

素因数の和:4055

約数の個数: 24

約数和(自身を含む): 171034080

約数和(自身を除く): 89670220

約数列:

[1, 2, 4, 5, 10, 20, 1867, 2179, 3734, 4358, 7468, 8716, 9335, 10895, 18670, 21790, 37340, 43580, 4068193, 8136386, 16272772, 20340965, 40681930, 81363860]

約数ペア:

[(1, 81363860), (2, 40681930), (4, 20340965), (5, 16272772), (10, 8136386), (20, 4068193), (1867, 43580), (2179, 37340), (3734, 21790), (4358, 18670), (7468, 10895), (8716, 9335)]