2720823

素因数分解:

$3^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{223}}^1$

素因数の和:323

約数の個数: 24

約数和(自身を含む): 4290048

約数和(自身を除く): 1569225

約数列:

[1, 3, 7, 21, 49, 83, 147, 223, 249, 581, 669, 1561, 1743, 4067, 4683, 10927, 12201, 18509, 32781, 55527, 129563, 388689, 906941, 2720823]

約数ペア:

[(1, 2720823), (3, 906941), (7, 388689), (21, 129563), (49, 55527), (83, 32781), (147, 18509), (223, 12201), (249, 10927), (581, 4683), (669, 4067), (1561, 1743)]