21189714

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^2$

素因数の和:419

約数の個数: 48

約数和(自身を含む): 52425408

約数和(自身を除く): 31235694

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 182, 197, 273, 394, 546, 591, 1182, 1379, 2561, 2758, 4137, 5122, 7683, 8274, 15366, 17927, 35854, 38809, 53781, 77618, 107562, 116427, 232854, 271663, 504517, 543326, 814989, 1009034, 1513551, 1629978, 3027102, 3531619, 7063238, 10594857, 21189714]

約数ペア:

[(1, 21189714), (2, 10594857), (3, 7063238), (6, 3531619), (7, 3027102), (13, 1629978), (14, 1513551), (21, 1009034), (26, 814989), (39, 543326), (42, 504517), (78, 271663), (91, 232854), (182, 116427), (197, 107562), (273, 77618), (394, 53781), (546, 38809), (591, 35854), (1182, 17927), (1379, 15366), (2561, 8274), (2758, 7683), (4137, 5122)]