40639640

素因数分解:

$2^3\times 5^1\times {\mathrm{1015991}}^1$

素因数の和:1016002

約数の個数: 16

約数和(自身を含む): 91439280

約数和(自身を除く): 50799640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1015991, 2031982, 4063964, 5079955, 8127928, 10159910, 20319820, 40639640]

約数ペア:

[(1, 40639640), (2, 20319820), (4, 10159910), (5, 8127928), (8, 5079955), (10, 4063964), (20, 2031982), (40, 1015991)]