28705456

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{138007}}^1$

素因数の和:138028

約数の個数: 20

約数和(自身を含む): 59895472

約数和(自身を除く): 31190016

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 138007, 276014, 552028, 1104056, 1794091, 2208112, 3588182, 7176364, 14352728, 28705456]

約数ペア:

[(1, 28705456), (2, 14352728), (4, 7176364), (8, 3588182), (13, 2208112), (16, 1794091), (26, 1104056), (52, 552028), (104, 276014), (208, 138007)]