20668996

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 39997440

約数和(自身を除く): 19328444

約数列:

[1, 2, 4, 23, 29, 46, 58, 61, 92, 116, 122, 127, 244, 254, 508, 667, 1334, 1403, 1769, 2668, 2806, 2921, 3538, 3683, 5612, 5842, 7076, 7366, 7747, 11684, 14732, 15494, 30988, 40687, 81374, 84709, 162748, 169418, 178181, 224663, 338836, 356362, 449326, 712724, 898652, 5167249, 10334498, 20668996]

約数ペア:

[(1, 20668996), (2, 10334498), (4, 5167249), (23, 898652), (29, 712724), (46, 449326), (58, 356362), (61, 338836), (92, 224663), (116, 178181), (122, 169418), (127, 162748), (244, 84709), (254, 81374), (508, 40687), (667, 30988), (1334, 15494), (1403, 14732), (1769, 11684), (2668, 7747), (2806, 7366), (2921, 7076), (3538, 5842), (3683, 5612)]