25439780

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{9151}}^1$

素因数の和:9299

約数の個数: 24

約数和(自身を含む): 53813760

約数和(自身を除く): 28373980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 9151, 18302, 36604, 45755, 91510, 183020, 1271989, 2543978, 5087956, 6359945, 12719890, 25439780]

約数ペア:

[(1, 25439780), (2, 12719890), (4, 6359945), (5, 5087956), (10, 2543978), (20, 1271989), (139, 183020), (278, 91510), (556, 45755), (695, 36604), (1390, 18302), (2780, 9151)]