81349424

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{391103}}^1$

素因数の和:391124

約数の個数: 20

約数和(自身を含む): 169739136

約数和(自身を除く): 88389712

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 391103, 782206, 1564412, 3128824, 5084339, 6257648, 10168678, 20337356, 40674712, 81349424]

約数ペア:

[(1, 81349424), (2, 40674712), (4, 20337356), (8, 10168678), (13, 6257648), (16, 5084339), (26, 3128824), (52, 1564412), (104, 782206), (208, 391103)]