81193424

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{390353}}^1$

素因数の和:390374

約数の個数: 20

約数和(自身を含む): 169413636

約数和(自身を除く): 88220212

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 390353, 780706, 1561412, 3122824, 5074589, 6245648, 10149178, 20298356, 40596712, 81193424]

約数ペア:

[(1, 81193424), (2, 40596712), (4, 20298356), (8, 10149178), (13, 6245648), (16, 5074589), (26, 3122824), (52, 1561412), (104, 780706), (208, 390353)]