247656479

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{431}}^1$

素因数の和:587

約数の個数: 32

約数和(自身を含む): 306561024

約数和(自身を除く): 58904545

約数列:

[1, 7, 23, 43, 83, 161, 301, 431, 581, 989, 1909, 3017, 3569, 6923, 9913, 13363, 18533, 24983, 35773, 69391, 82087, 129731, 250411, 426259, 574609, 822779, 1538239, 2983813, 5759453, 10767673, 35379497, 247656479]

約数ペア:

[(1, 247656479), (7, 35379497), (23, 10767673), (43, 5759453), (83, 2983813), (161, 1538239), (301, 822779), (431, 574609), (581, 426259), (989, 250411), (1909, 129731), (3017, 82087), (3569, 69391), (6923, 35773), (9913, 24983), (13363, 18533)]