81689780

素因数分解:

$2^2\times 5^1\times {\mathrm{433}}^1\times {\mathrm{9433}}^1$

素因数の和:9875

約数の個数: 24

約数和(自身を含む): 171962952

約数和(自身を除く): 90273172

約数列:

[1, 2, 4, 5, 10, 20, 433, 866, 1732, 2165, 4330, 8660, 9433, 18866, 37732, 47165, 94330, 188660, 4084489, 8168978, 16337956, 20422445, 40844890, 81689780]

約数ペア:

[(1, 81689780), (2, 40844890), (4, 20422445), (5, 16337956), (10, 8168978), (20, 4084489), (433, 188660), (866, 94330), (1732, 47165), (2165, 37732), (4330, 18866), (8660, 9433)]