20705972

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{38921}}^1$

素因数の和:38951

約数の個数: 24

約数和(自身を含む): 43592640

約数和(自身を除く): 22886668

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 38921, 77842, 155684, 272447, 544894, 739499, 1089788, 1478998, 2957996, 5176493, 10352986, 20705972]

約数ペア:

[(1, 20705972), (2, 10352986), (4, 5176493), (7, 2957996), (14, 1478998), (19, 1089788), (28, 739499), (38, 544894), (76, 272447), (133, 155684), (266, 77842), (532, 38921)]