19743507

素因数分解:

$3^6\times 7^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:151

約数の個数: 56

約数和(自身を含む): 34941024

約数和(自身を除く): 15197517

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 73, 81, 159, 189, 219, 243, 371, 477, 511, 567, 657, 729, 1113, 1431, 1533, 1701, 1971, 3339, 3869, 4293, 4599, 5103, 5913, 10017, 11607, 12879, 13797, 17739, 27083, 30051, 34821, 38637, 41391, 53217, 81249, 90153, 104463, 124173, 243747, 270459, 313389, 372519, 731241, 940167, 2193723, 2820501, 6581169, 19743507]

約数ペア:

[(1, 19743507), (3, 6581169), (7, 2820501), (9, 2193723), (21, 940167), (27, 731241), (53, 372519), (63, 313389), (73, 270459), (81, 243747), (159, 124173), (189, 104463), (219, 90153), (243, 81249), (371, 53217), (477, 41391), (511, 38637), (567, 34821), (657, 30051), (729, 27083), (1113, 17739), (1431, 13797), (1533, 12879), (1701, 11607), (1971, 10017), (3339, 5913), (3869, 5103), (4293, 4599)]