128530520

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{23117}}^1$

素因数の和:23267

約数の個数: 32

約数和(自身を含む): 291286800

約数和(自身を除く): 162756280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 23117, 46234, 92468, 115585, 184936, 231170, 462340, 924680, 3213263, 6426526, 12853052, 16066315, 25706104, 32132630, 64265260, 128530520]

約数ペア:

[(1, 128530520), (2, 64265260), (4, 32132630), (5, 25706104), (8, 16066315), (10, 12853052), (20, 6426526), (40, 3213263), (139, 924680), (278, 462340), (556, 231170), (695, 184936), (1112, 115585), (1390, 92468), (2780, 46234), (5560, 23117)]