81859281

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{769}}^1$

素因数の和:953

約数の個数: 32

約数和(自身を含む): 129212160

約数和(自身を除く): 47352879

約数列:

[1, 3, 7, 21, 37, 111, 137, 259, 411, 769, 777, 959, 2307, 2877, 5069, 5383, 15207, 16149, 28453, 35483, 85359, 105353, 106449, 199171, 316059, 597513, 737471, 2212413, 3898061, 11694183, 27286427, 81859281]

約数ペア:

[(1, 81859281), (3, 27286427), (7, 11694183), (21, 3898061), (37, 2212413), (111, 737471), (137, 597513), (259, 316059), (411, 199171), (769, 106449), (777, 105353), (959, 85359), (2307, 35483), (2877, 28453), (5069, 16149), (5383, 15207)]