81271743

素因数分解:

$3^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{5167}}^1$

素因数の和:5291

約数の個数: 24

約数和(自身を含む): 127256832

約数和(自身を除く): 45985089

約数列:

[1, 3, 7, 21, 49, 107, 147, 321, 749, 2247, 5167, 5243, 15501, 15729, 36169, 108507, 253183, 552869, 759549, 1658607, 3870083, 11610249, 27090581, 81271743]

約数ペア:

[(1, 81271743), (3, 27090581), (7, 11610249), (21, 3870083), (49, 1658607), (107, 759549), (147, 552869), (321, 253183), (749, 108507), (2247, 36169), (5167, 15729), (5243, 15501)]