25711780

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1987}}^1$

素因数の和:2643

約数の個数: 24

約数和(自身を含む): 54105408

約数和(自身を除く): 28393628

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 1987, 2588, 3235, 3974, 6470, 7948, 9935, 12940, 19870, 39740, 1285589, 2571178, 5142356, 6427945, 12855890, 25711780]

約数ペア:

[(1, 25711780), (2, 12855890), (4, 6427945), (5, 5142356), (10, 2571178), (20, 1285589), (647, 39740), (1294, 19870), (1987, 12940), (2588, 9935), (3235, 7948), (3974, 6470)]