77980040

素因数分解:

$2^3\times 5^1\times {\mathrm{1949501}}^1$

素因数の和:1949512

約数の個数: 16

約数和(自身を含む): 175455180

約数和(自身を除く): 97475140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1949501, 3899002, 7798004, 9747505, 15596008, 19495010, 38990020, 77980040]

約数ペア:

[(1, 77980040), (2, 38990020), (4, 19495010), (5, 15596008), (8, 9747505), (10, 7798004), (20, 3899002), (40, 1949501)]