25391020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{17881}}^1$

素因数の和:17961

約数の個数: 24

約数和(自身を含む): 54075168

約数和(自身を除く): 28684148

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 17881, 35762, 71524, 89405, 178810, 357620, 1269551, 2539102, 5078204, 6347755, 12695510, 25391020]

約数ペア:

[(1, 25391020), (2, 12695510), (4, 6347755), (5, 5078204), (10, 2539102), (20, 1269551), (71, 357620), (142, 178810), (284, 89405), (355, 71524), (710, 35762), (1420, 17881)]