18238724

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 38535168

約数和(自身を除く): 20296444

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 127, 161, 223, 254, 322, 446, 508, 644, 889, 892, 1561, 1778, 2921, 3122, 3556, 5129, 5842, 6244, 10258, 11684, 20447, 20516, 28321, 35903, 40894, 56642, 71806, 81788, 113284, 143612, 198247, 396494, 651383, 792988, 1302766, 2605532, 4559681, 9119362, 18238724]

約数ペア:

[(1, 18238724), (2, 9119362), (4, 4559681), (7, 2605532), (14, 1302766), (23, 792988), (28, 651383), (46, 396494), (92, 198247), (127, 143612), (161, 113284), (223, 81788), (254, 71806), (322, 56642), (446, 40894), (508, 35903), (644, 28321), (889, 20516), (892, 20447), (1561, 11684), (1778, 10258), (2921, 6244), (3122, 5842), (3556, 5129)]