138211820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{4111}}^1$

素因数の和:4202

約数の個数: 36

約数和(自身を含む): 297568992

約数和(自身を除く): 159357172

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1681, 3362, 4111, 6724, 8222, 8405, 16444, 16810, 20555, 33620, 41110, 82220, 168551, 337102, 674204, 842755, 1685510, 3371020, 6910591, 13821182, 27642364, 34552955, 69105910, 138211820]

約数ペア:

[(1, 138211820), (2, 69105910), (4, 34552955), (5, 27642364), (10, 13821182), (20, 6910591), (41, 3371020), (82, 1685510), (164, 842755), (205, 674204), (410, 337102), (820, 168551), (1681, 82220), (3362, 41110), (4111, 33620), (6724, 20555), (8222, 16810), (8405, 16444)]