20180120

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6911}}^1$

素因数の和:6995

約数の個数: 32

約数和(自身を含む): 46033920

約数和(自身を除く): 25853800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6911, 13822, 27644, 34555, 55288, 69110, 138220, 276440, 504503, 1009006, 2018012, 2522515, 4036024, 5045030, 10090060, 20180120]

約数ペア:

[(1, 20180120), (2, 10090060), (4, 5045030), (5, 4036024), (8, 2522515), (10, 2018012), (20, 1009006), (40, 504503), (73, 276440), (146, 138220), (292, 69110), (365, 55288), (584, 34555), (730, 27644), (1460, 13822), (2920, 6911)]