8640513

素因数分解:

$3^4\times 7^3\times {\mathrm{311}}^1$

素因数の和:344

約数の個数: 40

約数和(自身を含む): 15100800

約数和(自身を除く): 6460287

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 311, 343, 441, 567, 933, 1029, 1323, 2177, 2799, 3087, 3969, 6531, 8397, 9261, 15239, 19593, 25191, 27783, 45717, 58779, 106673, 137151, 176337, 320019, 411453, 960057, 1234359, 2880171, 8640513]

約数ペア:

[(1, 8640513), (3, 2880171), (7, 1234359), (9, 960057), (21, 411453), (27, 320019), (49, 176337), (63, 137151), (81, 106673), (147, 58779), (189, 45717), (311, 27783), (343, 25191), (441, 19593), (567, 15239), (933, 9261), (1029, 8397), (1323, 6531), (2177, 3969), (2799, 3087)]