15481640

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1109}}^1$

素因数の和:1469

約数の個数: 32

約数和(自身を含む): 34965000

約数和(自身を除く): 19483360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1109, 1396, 1745, 2218, 2792, 3490, 4436, 5545, 6980, 8872, 11090, 13960, 22180, 44360, 387041, 774082, 1548164, 1935205, 3096328, 3870410, 7740820, 15481640]

約数ペア:

[(1, 15481640), (2, 7740820), (4, 3870410), (5, 3096328), (8, 1935205), (10, 1548164), (20, 774082), (40, 387041), (349, 44360), (698, 22180), (1109, 13960), (1396, 11090), (1745, 8872), (2218, 6980), (2792, 5545), (3490, 4436)]