81819560

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{5861}}^1$

素因数の和:6221

約数の個数: 32

約数和(自身を含む): 184653000

約数和(自身を除く): 102833440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1745, 2792, 3490, 5861, 6980, 11722, 13960, 23444, 29305, 46888, 58610, 117220, 234440, 2045489, 4090978, 8181956, 10227445, 16363912, 20454890, 40909780, 81819560]

約数ペア:

[(1, 81819560), (2, 40909780), (4, 20454890), (5, 16363912), (8, 10227445), (10, 8181956), (20, 4090978), (40, 2045489), (349, 234440), (698, 117220), (1396, 58610), (1745, 46888), (2792, 29305), (3490, 23444), (5861, 13960), (6980, 11722)]