20768080

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11287}}^1$

素因数の和:11323

約数の個数: 40

約数和(自身を含む): 50389632

約数和(自身を除く): 29621552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11287, 22574, 45148, 56435, 90296, 112870, 180592, 225740, 259601, 451480, 519202, 902960, 1038404, 1298005, 2076808, 2596010, 4153616, 5192020, 10384040, 20768080]

約数ペア:

[(1, 20768080), (2, 10384040), (4, 5192020), (5, 4153616), (8, 2596010), (10, 2076808), (16, 1298005), (20, 1038404), (23, 902960), (40, 519202), (46, 451480), (80, 259601), (92, 225740), (115, 180592), (184, 112870), (230, 90296), (368, 56435), (460, 45148), (920, 22574), (1840, 11287)]