20516139

素因数分解:

$3^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1487}}^1$

素因数の和:1576

約数の個数: 32

約数和(自身を含む): 35235840

約数和(自身を除く): 14719701

約数列:

[1, 3, 7, 9, 21, 27, 63, 73, 189, 219, 511, 657, 1487, 1533, 1971, 4461, 4599, 10409, 13383, 13797, 31227, 40149, 93681, 108551, 281043, 325653, 759857, 976959, 2279571, 2930877, 6838713, 20516139]

約数ペア:

[(1, 20516139), (3, 6838713), (7, 2930877), (9, 2279571), (21, 976959), (27, 759857), (63, 325653), (73, 281043), (189, 108551), (219, 93681), (511, 40149), (657, 31227), (1487, 13797), (1533, 13383), (1971, 10409), (4461, 4599)]