26059720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:302

約数の個数: 64

約数和(自身を含む): 60984000

約数和(自身を除く): 34924280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 109, 139, 172, 215, 218, 278, 344, 430, 436, 545, 556, 695, 860, 872, 1090, 1112, 1390, 1720, 2180, 2780, 4360, 4687, 5560, 5977, 9374, 11954, 15151, 18748, 23435, 23908, 29885, 30302, 37496, 46870, 47816, 59770, 60604, 75755, 93740, 119540, 121208, 151510, 187480, 239080, 303020, 606040, 651493, 1302986, 2605972, 3257465, 5211944, 6514930, 13029860, 26059720]

約数ペア:

[(1, 26059720), (2, 13029860), (4, 6514930), (5, 5211944), (8, 3257465), (10, 2605972), (20, 1302986), (40, 651493), (43, 606040), (86, 303020), (109, 239080), (139, 187480), (172, 151510), (215, 121208), (218, 119540), (278, 93740), (344, 75755), (430, 60604), (436, 59770), (545, 47816), (556, 46870), (695, 37496), (860, 30302), (872, 29885), (1090, 23908), (1112, 23435), (1390, 18748), (1720, 15151), (2180, 11954), (2780, 9374), (4360, 5977), (4687, 5560)]