68437520

素因数分解:

$2^4\times 5^1\times {\mathrm{787}}^1\times {\mathrm{1087}}^1$

素因数の和:1887

約数の個数: 40

約数和(自身を含む): 159465984

約数和(自身を除く): 91028464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 787, 1087, 1574, 2174, 3148, 3935, 4348, 5435, 6296, 7870, 8696, 10870, 12592, 15740, 17392, 21740, 31480, 43480, 62960, 86960, 855469, 1710938, 3421876, 4277345, 6843752, 8554690, 13687504, 17109380, 34218760, 68437520]

約数ペア:

[(1, 68437520), (2, 34218760), (4, 17109380), (5, 13687504), (8, 8554690), (10, 6843752), (16, 4277345), (20, 3421876), (40, 1710938), (80, 855469), (787, 86960), (1087, 62960), (1574, 43480), (2174, 31480), (3148, 21740), (3935, 17392), (4348, 15740), (5435, 12592), (6296, 10870), (7870, 8696)]