18982205

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4861}}^1$

素因数の和:4948

約数の個数: 16

約数和(自身を含む): 25204608

約数和(自身を除く): 6222403

約数列:

[1, 5, 11, 55, 71, 355, 781, 3905, 4861, 24305, 53471, 267355, 345131, 1725655, 3796441, 18982205]

約数ペア:

[(1, 18982205), (5, 3796441), (11, 1725655), (55, 345131), (71, 267355), (355, 53471), (781, 24305), (3905, 4861)]