257807781

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{3413}}^1$

素因数の和:3546

約数の個数: 48

約数和(自身を含む): 468673920

約数和(自身を除く): 210866139

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 109, 231, 327, 693, 763, 981, 1199, 2289, 3413, 3597, 6867, 8393, 10239, 10791, 23891, 25179, 30717, 37543, 71673, 75537, 112629, 215019, 262801, 337887, 372017, 788403, 1116051, 2365209, 2604119, 3348153, 4092187, 7812357, 12276561, 23437071, 28645309, 36829683, 85935927, 257807781]

約数ペア:

[(1, 257807781), (3, 85935927), (7, 36829683), (9, 28645309), (11, 23437071), (21, 12276561), (33, 7812357), (63, 4092187), (77, 3348153), (99, 2604119), (109, 2365209), (231, 1116051), (327, 788403), (693, 372017), (763, 337887), (981, 262801), (1199, 215019), (2289, 112629), (3413, 75537), (3597, 71673), (6867, 37543), (8393, 30717), (10239, 25179), (10791, 23891)]