2193723

素因数分解:

$3^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:145

約数の個数: 40

約数和(自身を含む): 3868128

約数和(自身を除く): 1674405

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 73, 81, 159, 189, 219, 371, 477, 511, 567, 657, 1113, 1431, 1533, 1971, 3339, 3869, 4293, 4599, 5913, 10017, 11607, 13797, 27083, 30051, 34821, 41391, 81249, 104463, 243747, 313389, 731241, 2193723]

約数ペア:

[(1, 2193723), (3, 731241), (7, 313389), (9, 243747), (21, 104463), (27, 81249), (53, 41391), (63, 34821), (73, 30051), (81, 27083), (159, 13797), (189, 11607), (219, 10017), (371, 5913), (477, 4599), (511, 4293), (567, 3869), (657, 3339), (1113, 1971), (1431, 1533)]