81494847

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{449}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 140025600

約数和(自身を除く): 58530753

約数列:

[1, 3, 7, 9, 21, 43, 63, 67, 129, 201, 301, 387, 449, 469, 603, 903, 1347, 1407, 2709, 2881, 3143, 4041, 4221, 8643, 9429, 19307, 20167, 25929, 28287, 30083, 57921, 60501, 90249, 135149, 173763, 181503, 210581, 270747, 405447, 631743, 1216341, 1293569, 1895229, 3880707, 9054983, 11642121, 27164949, 81494847]

約数ペア:

[(1, 81494847), (3, 27164949), (7, 11642121), (9, 9054983), (21, 3880707), (43, 1895229), (63, 1293569), (67, 1216341), (129, 631743), (201, 405447), (301, 270747), (387, 210581), (449, 181503), (469, 173763), (603, 135149), (903, 90249), (1347, 60501), (1407, 57921), (2709, 30083), (2881, 28287), (3143, 25929), (4041, 20167), (4221, 19307), (8643, 9429)]