28289471

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 35804160

約数和(自身を除く): 7514689

約数列:

[1, 7, 23, 29, 73, 83, 161, 203, 511, 581, 667, 1679, 1909, 2117, 2407, 4669, 6059, 11753, 13363, 14819, 16849, 42413, 48691, 55361, 139357, 175711, 340837, 387527, 975499, 1229977, 4041353, 28289471]

約数ペア:

[(1, 28289471), (7, 4041353), (23, 1229977), (29, 975499), (73, 387527), (83, 340837), (161, 175711), (203, 139357), (511, 55361), (581, 48691), (667, 42413), (1679, 16849), (1909, 14819), (2117, 13363), (2407, 11753), (4669, 6059)]