20011012

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^2\times {\mathrm{193}}^1$

素因数の和:257

約数の個数: 54

約数和(自身を含む): 42805518

約数和(自身を除く): 22794506

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 161, 193, 196, 322, 386, 529, 644, 772, 1058, 1127, 1351, 2116, 2254, 2702, 3703, 4439, 4508, 5404, 7406, 8878, 9457, 14812, 17756, 18914, 25921, 31073, 37828, 51842, 62146, 102097, 103684, 124292, 204194, 217511, 408388, 435022, 714679, 870044, 1429358, 2858716, 5002753, 10005506, 20011012]

約数ペア:

[(1, 20011012), (2, 10005506), (4, 5002753), (7, 2858716), (14, 1429358), (23, 870044), (28, 714679), (46, 435022), (49, 408388), (92, 217511), (98, 204194), (161, 124292), (193, 103684), (196, 102097), (322, 62146), (386, 51842), (529, 37828), (644, 31073), (772, 25921), (1058, 18914), (1127, 17756), (1351, 14812), (2116, 9457), (2254, 8878), (2702, 7406), (3703, 5404), (4439, 4508)]