2808080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3191}}^1$

素因数の和:3215

約数の個数: 40

約数和(自身を含む): 7124544

約数和(自身を除く): 4316464

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 3191, 6382, 12764, 15955, 25528, 31910, 35101, 51056, 63820, 70202, 127640, 140404, 175505, 255280, 280808, 351010, 561616, 702020, 1404040, 2808080]

約数ペア:

[(1, 2808080), (2, 1404040), (4, 702020), (5, 561616), (8, 351010), (10, 280808), (11, 255280), (16, 175505), (20, 140404), (22, 127640), (40, 70202), (44, 63820), (55, 51056), (80, 35101), (88, 31910), (110, 25528), (176, 15955), (220, 12764), (440, 6382), (880, 3191)]