638820976

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{304781}}^1$

素因数の和:304920

約数の個数: 20

約数和(自身を含む): 1247167944

約数和(自身を除く): 608346968

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 304781, 609562, 1219124, 2438248, 4876496, 39926311, 79852622, 159705244, 319410488, 638820976]

約数ペア:

[(1, 638820976), (2, 319410488), (4, 159705244), (8, 79852622), (16, 39926311), (131, 4876496), (262, 2438248), (524, 1219124), (1048, 609562), (2096, 304781)]