81268029

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{21347}}^1$

素因数の和:21406

約数の個数: 20

約数和(自身を含む): 123989184

約数和(自身を除く): 42721155

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 21347, 64041, 192123, 576369, 1003309, 1729107, 3009927, 9029781, 27089343, 81268029]

約数ペア:

[(1, 81268029), (3, 27089343), (9, 9029781), (27, 3009927), (47, 1729107), (81, 1003309), (141, 576369), (423, 192123), (1269, 64041), (3807, 21347)]