20648943

素因数分解:

$3^2\times 7^3\times {\mathrm{6689}}^1$

素因数の和:6716

約数の個数: 24

約数和(自身を含む): 34788000

約数和(自身を除く): 14139057

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 6689, 20067, 46823, 60201, 140469, 327761, 421407, 983283, 2294327, 2949849, 6882981, 20648943]

約数ペア:

[(1, 20648943), (3, 6882981), (7, 2949849), (9, 2294327), (21, 983283), (49, 421407), (63, 327761), (147, 140469), (343, 60201), (441, 46823), (1029, 20067), (3087, 6689)]