256988780

素因数分解:

$2^2\times 5^1\times {\mathrm{2089}}^1\times {\mathrm{6151}}^1$

素因数の和:8249

約数の個数: 24

約数和(自身を含む): 540022560

約数和(自身を除く): 283033780

約数列:

[1, 2, 4, 5, 10, 20, 2089, 4178, 6151, 8356, 10445, 12302, 20890, 24604, 30755, 41780, 61510, 123020, 12849439, 25698878, 51397756, 64247195, 128494390, 256988780]

約数ペア:

[(1, 256988780), (2, 128494390), (4, 64247195), (5, 51397756), (10, 25698878), (20, 12849439), (2089, 123020), (4178, 61510), (6151, 41780), (8356, 30755), (10445, 24604), (12302, 20890)]