25856980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{409}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 56826000

約数和(自身を除く): 30969020

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 109, 116, 145, 218, 290, 409, 436, 545, 580, 818, 1090, 1636, 2045, 2180, 3161, 4090, 6322, 8180, 11861, 12644, 15805, 23722, 31610, 44581, 47444, 59305, 63220, 89162, 118610, 178324, 222905, 237220, 445810, 891620, 1292849, 2585698, 5171396, 6464245, 12928490, 25856980]

約数ペア:

[(1, 25856980), (2, 12928490), (4, 6464245), (5, 5171396), (10, 2585698), (20, 1292849), (29, 891620), (58, 445810), (109, 237220), (116, 222905), (145, 178324), (218, 118610), (290, 89162), (409, 63220), (436, 59305), (545, 47444), (580, 44581), (818, 31610), (1090, 23722), (1636, 15805), (2045, 12644), (2180, 11861), (3161, 8180), (4090, 6322)]