1212080

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:261

約数の個数: 40

約数和(自身を含む): 2864400

約数和(自身を除く): 1652320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 139, 218, 278, 436, 545, 556, 695, 872, 1090, 1112, 1390, 1744, 2180, 2224, 2780, 4360, 5560, 8720, 11120, 15151, 30302, 60604, 75755, 121208, 151510, 242416, 303020, 606040, 1212080]

約数ペア:

[(1, 1212080), (2, 606040), (4, 303020), (5, 242416), (8, 151510), (10, 121208), (16, 75755), (20, 60604), (40, 30302), (80, 15151), (109, 11120), (139, 8720), (218, 5560), (278, 4360), (436, 2780), (545, 2224), (556, 2180), (695, 1744), (872, 1390), (1090, 1112)]