20685546

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{499}}^1$

素因数の和:568

約数の個数: 72

約数和(自身を含む): 53352000

約数和(自身を除く): 32666454

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 47, 49, 63, 94, 98, 126, 141, 147, 282, 294, 329, 423, 441, 499, 658, 846, 882, 987, 998, 1497, 1974, 2303, 2961, 2994, 3493, 4491, 4606, 5922, 6909, 6986, 8982, 10479, 13818, 20727, 20958, 23453, 24451, 31437, 41454, 46906, 48902, 62874, 70359, 73353, 140718, 146706, 164171, 211077, 220059, 328342, 422154, 440118, 492513, 985026, 1149197, 1477539, 2298394, 2955078, 3447591, 6895182, 10342773, 20685546]

約数ペア:

[(1, 20685546), (2, 10342773), (3, 6895182), (6, 3447591), (7, 2955078), (9, 2298394), (14, 1477539), (18, 1149197), (21, 985026), (42, 492513), (47, 440118), (49, 422154), (63, 328342), (94, 220059), (98, 211077), (126, 164171), (141, 146706), (147, 140718), (282, 73353), (294, 70359), (329, 62874), (423, 48902), (441, 46906), (499, 41454), (658, 31437), (846, 24451), (882, 23453), (987, 20958), (998, 20727), (1497, 13818), (1974, 10479), (2303, 8982), (2961, 6986), (2994, 6909), (3493, 5922), (4491, 4606)]