18661671

素因数分解:

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

素因数の和:104

約数の個数: 64

約数和(自身を含む): 34007040

約数和(自身を除く): 15345369

約数列:

[1, 3, 7, 9, 21, 23, 27, 53, 63, 69, 81, 159, 161, 189, 207, 243, 371, 477, 483, 567, 621, 729, 1113, 1219, 1431, 1449, 1701, 1863, 2187, 3339, 3657, 4293, 4347, 5103, 5589, 8533, 10017, 10971, 12879, 13041, 15309, 16767, 25599, 30051, 32913, 38637, 39123, 50301, 76797, 90153, 98739, 115911, 117369, 230391, 270459, 296217, 352107, 691173, 811377, 888651, 2073519, 2665953, 6220557, 18661671]

約数ペア:

[(1, 18661671), (3, 6220557), (7, 2665953), (9, 2073519), (21, 888651), (23, 811377), (27, 691173), (53, 352107), (63, 296217), (69, 270459), (81, 230391), (159, 117369), (161, 115911), (189, 98739), (207, 90153), (243, 76797), (371, 50301), (477, 39123), (483, 38637), (567, 32913), (621, 30051), (729, 25599), (1113, 16767), (1219, 15309), (1431, 13041), (1449, 12879), (1701, 10971), (1863, 10017), (2187, 8533), (3339, 5589), (3657, 5103), (4293, 4347)]