20880284

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 40870368

約数和(自身を除く): 19990084

約数列:

[1, 2, 4, 17, 34, 37, 43, 68, 74, 86, 148, 172, 193, 386, 629, 731, 772, 1258, 1462, 1591, 2516, 2924, 3182, 3281, 6364, 6562, 7141, 8299, 13124, 14282, 16598, 27047, 28564, 33196, 54094, 108188, 121397, 141083, 242794, 282166, 307063, 485588, 564332, 614126, 1228252, 5220071, 10440142, 20880284]

約数ペア:

[(1, 20880284), (2, 10440142), (4, 5220071), (17, 1228252), (34, 614126), (37, 564332), (43, 485588), (68, 307063), (74, 282166), (86, 242794), (148, 141083), (172, 121397), (193, 108188), (386, 54094), (629, 33196), (731, 28564), (772, 27047), (1258, 16598), (1462, 14282), (1591, 13124), (2516, 8299), (2924, 7141), (3182, 6562), (3281, 6364)]