20616995

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 31299840

約数和(自身を除く): 10682845

約数列:

[1, 5, 7, 19, 35, 43, 49, 95, 103, 133, 215, 245, 301, 515, 665, 721, 817, 931, 1505, 1957, 2107, 3605, 4085, 4429, 4655, 5047, 5719, 9785, 10535, 13699, 22145, 25235, 28595, 31003, 40033, 68495, 84151, 95893, 155015, 200165, 217021, 420755, 479465, 589057, 1085105, 2945285, 4123399, 20616995]

約数ペア:

[(1, 20616995), (5, 4123399), (7, 2945285), (19, 1085105), (35, 589057), (43, 479465), (49, 420755), (95, 217021), (103, 200165), (133, 155015), (215, 95893), (245, 84151), (301, 68495), (515, 40033), (665, 31003), (721, 28595), (817, 25235), (931, 22145), (1505, 13699), (1957, 10535), (2107, 9785), (3605, 5719), (4085, 5047), (4429, 4655)]