1991231487

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{735043}}^1$

素因数の和:735099

約数の個数: 24

約数和(自身を含む): 3363561344

約数和(自身を除く): 1372329857

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 735043, 2205129, 5145301, 6615387, 15435903, 31606849, 46307709, 94820547, 221247943, 284461641, 663743829, 1991231487]

約数ペア:

[(1, 1991231487), (3, 663743829), (7, 284461641), (9, 221247943), (21, 94820547), (43, 46307709), (63, 31606849), (129, 15435903), (301, 6615387), (387, 5145301), (903, 2205129), (2709, 735043)]