31488880

素因数分解:

$2^4\times 5^1\times {\mathrm{393611}}^1$

素因数の和:393624

約数の個数: 20

約数和(自身を含む): 73211832

約数和(自身を除く): 41722952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 393611, 787222, 1574444, 1968055, 3148888, 3936110, 6297776, 7872220, 15744440, 31488880]

約数ペア:

[(1, 31488880), (2, 15744440), (4, 7872220), (5, 6297776), (8, 3936110), (10, 3148888), (16, 1968055), (20, 1574444), (40, 787222), (80, 393611)]