27989080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{99961}}^1$

素因数の和:99979

約数の個数: 32

約数和(自身を含む): 71972640

約数和(自身を除く): 43983560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 99961, 199922, 399844, 499805, 699727, 799688, 999610, 1399454, 1999220, 2798908, 3498635, 3998440, 5597816, 6997270, 13994540, 27989080]

約数ペア:

[(1, 27989080), (2, 13994540), (4, 6997270), (5, 5597816), (7, 3998440), (8, 3498635), (10, 2798908), (14, 1999220), (20, 1399454), (28, 999610), (35, 799688), (40, 699727), (56, 499805), (70, 399844), (140, 199922), (280, 99961)]