28687923

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{293}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 48432384

約数和(自身を除く): 19744461

約数列:

[1, 3, 9, 11, 23, 33, 43, 69, 99, 129, 207, 253, 293, 387, 473, 759, 879, 989, 1419, 2277, 2637, 2967, 3223, 4257, 6739, 8901, 9669, 10879, 12599, 20217, 29007, 32637, 37797, 60651, 74129, 97911, 113391, 138589, 222387, 289777, 415767, 667161, 869331, 1247301, 2607993, 3187547, 9562641, 28687923]

約数ペア:

[(1, 28687923), (3, 9562641), (9, 3187547), (11, 2607993), (23, 1247301), (33, 869331), (43, 667161), (69, 415767), (99, 289777), (129, 222387), (207, 138589), (253, 113391), (293, 97911), (387, 74129), (473, 60651), (759, 37797), (879, 32637), (989, 29007), (1419, 20217), (2277, 12599), (2637, 10879), (2967, 9669), (3223, 8901), (4257, 6739)]