9906985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:189

約数の個数: 32

約数和(自身を含む): 13685760

約数和(自身を除く): 3778775

約数列:

[1, 5, 11, 43, 55, 59, 71, 215, 295, 355, 473, 649, 781, 2365, 2537, 3053, 3245, 3905, 4189, 12685, 15265, 20945, 27907, 33583, 46079, 139535, 167915, 180127, 230395, 900635, 1981397, 9906985]

約数ペア:

[(1, 9906985), (5, 1981397), (11, 900635), (43, 230395), (55, 180127), (59, 167915), (71, 139535), (215, 46079), (295, 33583), (355, 27907), (473, 20945), (649, 15265), (781, 12685), (2365, 4189), (2537, 3905), (3053, 3245)]