51216040

素因数分解:

$2^3\times 5^1\times {\mathrm{1280401}}^1$

素因数の和:1280412

約数の個数: 16

約数和(自身を含む): 115236180

約数和(自身を除く): 64020140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1280401, 2560802, 5121604, 6402005, 10243208, 12804010, 25608020, 51216040]

約数ペア:

[(1, 51216040), (2, 25608020), (4, 12804010), (5, 10243208), (8, 6402005), (10, 5121604), (20, 2560802), (40, 1280401)]