28879767

素因数分解:

$3^3\times 7^2\times {\mathrm{83}}^1\times {\mathrm{263}}^1$

素因数の和:369

約数の個数: 48

約数和(自身を含む): 50561280

約数和(自身を除く): 21681513

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 83, 147, 189, 249, 263, 441, 581, 747, 789, 1323, 1743, 1841, 2241, 2367, 4067, 5229, 5523, 7101, 12201, 12887, 15687, 16569, 21829, 36603, 38661, 49707, 65487, 109809, 115983, 152803, 196461, 347949, 458409, 589383, 1069621, 1375227, 3208863, 4125681, 9626589, 28879767]

約数ペア:

[(1, 28879767), (3, 9626589), (7, 4125681), (9, 3208863), (21, 1375227), (27, 1069621), (49, 589383), (63, 458409), (83, 347949), (147, 196461), (189, 152803), (249, 115983), (263, 109809), (441, 65487), (581, 49707), (747, 38661), (789, 36603), (1323, 21829), (1743, 16569), (1841, 15687), (2241, 12887), (2367, 12201), (4067, 7101), (5229, 5523)]