21949256

素因数分解:

$2^3\times 7^3\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:467

約数の個数: 64

約数和(自身を含む): 50640000

約数和(自身を除く): 28690744

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 49, 56, 76, 98, 133, 152, 196, 266, 343, 392, 421, 532, 686, 842, 931, 1064, 1372, 1684, 1862, 2744, 2947, 3368, 3724, 5894, 6517, 7448, 7999, 11788, 13034, 15998, 20629, 23576, 26068, 31996, 41258, 52136, 55993, 63992, 82516, 111986, 144403, 165032, 223972, 288806, 391951, 447944, 577612, 783902, 1155224, 1567804, 2743657, 3135608, 5487314, 10974628, 21949256]

約数ペア:

[(1, 21949256), (2, 10974628), (4, 5487314), (7, 3135608), (8, 2743657), (14, 1567804), (19, 1155224), (28, 783902), (38, 577612), (49, 447944), (56, 391951), (76, 288806), (98, 223972), (133, 165032), (152, 144403), (196, 111986), (266, 82516), (343, 63992), (392, 55993), (421, 52136), (532, 41258), (686, 31996), (842, 26068), (931, 23576), (1064, 20629), (1372, 15998), (1684, 13034), (1862, 11788), (2744, 7999), (2947, 7448), (3368, 6517), (3724, 5894)]