6720399

素因数分解:

$3^2\times 7^4\times {\mathrm{311}}^1$

素因数の和:345

約数の個数: 30

約数和(自身を含む): 11360856

約数和(自身を除く): 4640457

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 311, 343, 441, 933, 1029, 2177, 2401, 2799, 3087, 6531, 7203, 15239, 19593, 21609, 45717, 106673, 137151, 320019, 746711, 960057, 2240133, 6720399]

約数ペア:

[(1, 6720399), (3, 2240133), (7, 960057), (9, 746711), (21, 320019), (49, 137151), (63, 106673), (147, 45717), (311, 21609), (343, 19593), (441, 15239), (933, 7203), (1029, 6531), (2177, 3087), (2401, 2799)]