19749555

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{20899}}^1$

素因数の和:20920

約数の個数: 32

約数和(自身を含む): 40128000

約数和(自身を除く): 20378445

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 20899, 62697, 104495, 146293, 188091, 313485, 438879, 564273, 731465, 940455, 1316637, 2194395, 2821365, 3949911, 6583185, 19749555]

約数ペア:

[(1, 19749555), (3, 6583185), (5, 3949911), (7, 2821365), (9, 2194395), (15, 1316637), (21, 940455), (27, 731465), (35, 564273), (45, 438879), (63, 313485), (105, 188091), (135, 146293), (189, 104495), (315, 62697), (945, 20899)]