81549916

素因数分解:

$2^2\times 7^2\times {\mathrm{416071}}^1$

素因数の和:416089

約数の個数: 18

約数和(自身を含む): 166012728

約数和(自身を除く): 84462812

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 416071, 832142, 1664284, 2912497, 5824994, 11649988, 20387479, 40774958, 81549916]

約数ペア:

[(1, 81549916), (2, 40774958), (4, 20387479), (7, 11649988), (14, 5824994), (28, 2912497), (49, 1664284), (98, 832142), (196, 416071)]