81393700

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{10303}}^1$

素因数の和:10396

約数の個数: 36

約数和(自身を含む): 178877440

約数和(自身を除く): 97483740

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 3950, 7900, 10303, 20606, 41212, 51515, 103030, 206060, 257575, 515150, 813937, 1030300, 1627874, 3255748, 4069685, 8139370, 16278740, 20348425, 40696850, 81393700]

約数ペア:

[(1, 81393700), (2, 40696850), (4, 20348425), (5, 16278740), (10, 8139370), (20, 4069685), (25, 3255748), (50, 1627874), (79, 1030300), (100, 813937), (158, 515150), (316, 257575), (395, 206060), (790, 103030), (1580, 51515), (1975, 41212), (3950, 20606), (7900, 10303)]