20500976

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{9781}}^1$

素因数の和:9920

約数の個数: 20

約数和(自身を含む): 40027944

約数和(自身を除く): 19526968

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 9781, 19562, 39124, 78248, 156496, 1281311, 2562622, 5125244, 10250488, 20500976]

約数ペア:

[(1, 20500976), (2, 10250488), (4, 5125244), (8, 2562622), (16, 1281311), (131, 156496), (262, 78248), (524, 39124), (1048, 19562), (2096, 9781)]