257468547

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{617}}^1\times {\mathrm{641}}^1$

素因数の和:1299

約数の個数: 32

約数和(自身を含む): 406278144

約数和(自身を除く): 148809597

約数列:

[1, 3, 7, 21, 31, 93, 217, 617, 641, 651, 1851, 1923, 4319, 4487, 12957, 13461, 19127, 19871, 57381, 59613, 133889, 139097, 395497, 401667, 417291, 1186491, 2768479, 8305437, 12260407, 36781221, 85822849, 257468547]

約数ペア:

[(1, 257468547), (3, 85822849), (7, 36781221), (21, 12260407), (31, 8305437), (93, 2768479), (217, 1186491), (617, 417291), (641, 401667), (651, 395497), (1851, 139097), (1923, 133889), (4319, 59613), (4487, 57381), (12957, 19871), (13461, 19127)]