20945391

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1\times {\mathrm{877}}^1$

素因数の和:1318

約数の個数: 16

約数和(自身を含む): 29500800

約数和(自身を除く): 8555409

約数列:

[1, 3, 19, 57, 419, 877, 1257, 2631, 7961, 16663, 23883, 49989, 367463, 1102389, 6981797, 20945391]

約数ペア:

[(1, 20945391), (3, 6981797), (19, 1102389), (57, 367463), (419, 49989), (877, 23883), (1257, 16663), (2631, 7961)]