257214685

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29753}}^1$

素因数の和:29797

約数の個数: 32

約数和(自身を含む): 399893760

約数和(自身を除く): 142679075

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 247, 455, 665, 1235, 1729, 8645, 29753, 148765, 208271, 386789, 565307, 1041355, 1933945, 2707523, 2826535, 3957149, 7348991, 13537615, 19785745, 36744955, 51442937, 257214685]

約数ペア:

[(1, 257214685), (5, 51442937), (7, 36744955), (13, 19785745), (19, 13537615), (35, 7348991), (65, 3957149), (91, 2826535), (95, 2707523), (133, 1933945), (247, 1041355), (455, 565307), (665, 386789), (1235, 208271), (1729, 148765), (8645, 29753)]