12740680

素因数分解:

$2^3\times 5^1\times {\mathrm{443}}^1\times {\mathrm{719}}^1$

素因数の和:1173

約数の個数: 32

約数和(自身を含む): 28771200

約数和(自身を除く): 16030520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 443, 719, 886, 1438, 1772, 2215, 2876, 3544, 3595, 4430, 5752, 7190, 8860, 14380, 17720, 28760, 318517, 637034, 1274068, 1592585, 2548136, 3185170, 6370340, 12740680]

約数ペア:

[(1, 12740680), (2, 6370340), (4, 3185170), (5, 2548136), (8, 1592585), (10, 1274068), (20, 637034), (40, 318517), (443, 28760), (719, 17720), (886, 14380), (1438, 8860), (1772, 7190), (2215, 5752), (2876, 4430), (3544, 3595)]