39979760

素因数分解:

$2^4\times 5^1\times {\mathrm{499747}}^1$

素因数の和:499760

約数の個数: 20

約数和(自身を含む): 92953128

約数和(自身を除く): 52973368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499747, 999494, 1998988, 2498735, 3997976, 4997470, 7995952, 9994940, 19989880, 39979760]

約数ペア:

[(1, 39979760), (2, 19989880), (4, 9994940), (5, 7995952), (8, 4997470), (10, 3997976), (16, 2498735), (20, 1998988), (40, 999494), (80, 499747)]