16818543

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:165

約数の個数: 64

約数和(自身を含む): 30689280

約数和(自身を除く): 13870737

約数列:

[1, 3, 7, 9, 21, 23, 27, 53, 63, 69, 73, 159, 161, 189, 207, 219, 371, 477, 483, 511, 621, 657, 1113, 1219, 1431, 1449, 1533, 1679, 1971, 3339, 3657, 3869, 4347, 4599, 5037, 8533, 10017, 10971, 11607, 11753, 13797, 15111, 25599, 27083, 32913, 34821, 35259, 45333, 76797, 81249, 88987, 104463, 105777, 230391, 243747, 266961, 317331, 622909, 731241, 800883, 1868727, 2402649, 5606181, 16818543]

約数ペア:

[(1, 16818543), (3, 5606181), (7, 2402649), (9, 1868727), (21, 800883), (23, 731241), (27, 622909), (53, 317331), (63, 266961), (69, 243747), (73, 230391), (159, 105777), (161, 104463), (189, 88987), (207, 81249), (219, 76797), (371, 45333), (477, 35259), (483, 34821), (511, 32913), (621, 27083), (657, 25599), (1113, 15111), (1219, 13797), (1431, 11753), (1449, 11607), (1533, 10971), (1679, 10017), (1971, 8533), (3339, 5037), (3657, 4599), (3869, 4347)]