261530885

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1831}}^1$

素因数の和:1914

約数の個数: 48

約数和(自身を含む): 406000512

約数和(自身を除く): 144469627

約数列:

[1, 5, 7, 11, 35, 49, 53, 55, 77, 245, 265, 371, 385, 539, 583, 1831, 1855, 2597, 2695, 2915, 4081, 9155, 12817, 12985, 20141, 20405, 28567, 64085, 89719, 97043, 100705, 140987, 142835, 448595, 485215, 679301, 704935, 986909, 1067473, 3396505, 4755107, 4934545, 5337365, 7472311, 23775535, 37361555, 52306177, 261530885]

約数ペア:

[(1, 261530885), (5, 52306177), (7, 37361555), (11, 23775535), (35, 7472311), (49, 5337365), (53, 4934545), (55, 4755107), (77, 3396505), (245, 1067473), (265, 986909), (371, 704935), (385, 679301), (539, 485215), (583, 448595), (1831, 142835), (1855, 140987), (2597, 100705), (2695, 97043), (2915, 89719), (4081, 64085), (9155, 28567), (12817, 20405), (12985, 20141)]