25518820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{17971}}^1$

素因数の和:18051

約数の個数: 24

約数和(自身を含む): 54347328

約数和(自身を除く): 28828508

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 17971, 35942, 71884, 89855, 179710, 359420, 1275941, 2551882, 5103764, 6379705, 12759410, 25518820]

約数ペア:

[(1, 25518820), (2, 12759410), (4, 6379705), (5, 5103764), (10, 2551882), (20, 1275941), (71, 359420), (142, 179710), (284, 89855), (355, 71884), (710, 35942), (1420, 17971)]