20654109

素因数分解:

$3^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{499}}^1$

素因数の和:591

約数の個数: 40

約数和(自身を含む): 35816000

約数和(自身を除く): 15161891

約数列:

[1, 3, 7, 9, 21, 27, 63, 73, 81, 189, 219, 499, 511, 567, 657, 1497, 1533, 1971, 3493, 4491, 4599, 5913, 10479, 13473, 13797, 31437, 36427, 40419, 41391, 94311, 109281, 254989, 282933, 327843, 764967, 983529, 2294901, 2950587, 6884703, 20654109]

約数ペア:

[(1, 20654109), (3, 6884703), (7, 2950587), (9, 2294901), (21, 983529), (27, 764967), (63, 327843), (73, 282933), (81, 254989), (189, 109281), (219, 94311), (499, 41391), (511, 40419), (567, 36427), (657, 31437), (1497, 13797), (1533, 13473), (1971, 10479), (3493, 5913), (4491, 4599)]