256250799

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{51487}}^1$

素因数の和:51579

約数の個数: 24

約数和(自身を含む): 428380160

約数和(自身を除く): 172129361

約数列:

[1, 3, 7, 9, 21, 63, 79, 237, 553, 711, 1659, 4977, 51487, 154461, 360409, 463383, 1081227, 3243681, 4067473, 12202419, 28472311, 36607257, 85416933, 256250799]

約数ペア:

[(1, 256250799), (3, 85416933), (7, 36607257), (9, 28472311), (21, 12202419), (63, 4067473), (79, 3243681), (237, 1081227), (553, 463383), (711, 360409), (1659, 154461), (4977, 51487)]