13221640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7687}}^1$

素因数の和:7741

約数の個数: 32

約数和(自身を含む): 30444480

約数和(自身を除く): 17222840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 7687, 15374, 30748, 38435, 61496, 76870, 153740, 307480, 330541, 661082, 1322164, 1652705, 2644328, 3305410, 6610820, 13221640]

約数ペア:

[(1, 13221640), (2, 6610820), (4, 3305410), (5, 2644328), (8, 1652705), (10, 1322164), (20, 661082), (40, 330541), (43, 307480), (86, 153740), (172, 76870), (215, 61496), (344, 38435), (430, 30748), (860, 15374), (1720, 7687)]