18628995

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^2$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 37456128

約数和(自身を除く): 18827133

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 127, 165, 231, 381, 385, 635, 889, 1155, 1397, 1905, 2667, 4191, 4445, 6985, 9779, 13335, 16129, 20955, 29337, 48387, 48895, 80645, 112903, 146685, 177419, 241935, 338709, 532257, 564515, 887095, 1241933, 1693545, 2661285, 3725799, 6209665, 18628995]

約数ペア:

[(1, 18628995), (3, 6209665), (5, 3725799), (7, 2661285), (11, 1693545), (15, 1241933), (21, 887095), (33, 564515), (35, 532257), (55, 338709), (77, 241935), (105, 177419), (127, 146685), (165, 112903), (231, 80645), (381, 48895), (385, 48387), (635, 29337), (889, 20955), (1155, 16129), (1397, 13335), (1905, 9779), (2667, 6985), (4191, 4445)]