21188538

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{337}}^1\times {\mathrm{499}}^1$

素因数の和:851

約数の個数: 48

約数和(自身を含む): 52728000

約数和(自身を除く): 31539462

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 337, 499, 674, 998, 1011, 1497, 2022, 2359, 2994, 3033, 3493, 4491, 4718, 6066, 6986, 7077, 8982, 10479, 14154, 20958, 21231, 31437, 42462, 62874, 168163, 336326, 504489, 1008978, 1177141, 1513467, 2354282, 3026934, 3531423, 7062846, 10594269, 21188538]

約数ペア:

[(1, 21188538), (2, 10594269), (3, 7062846), (6, 3531423), (7, 3026934), (9, 2354282), (14, 1513467), (18, 1177141), (21, 1008978), (42, 504489), (63, 336326), (126, 168163), (337, 62874), (499, 42462), (674, 31437), (998, 21231), (1011, 20958), (1497, 14154), (2022, 10479), (2359, 8982), (2994, 7077), (3033, 6986), (3493, 6066), (4491, 4718)]