20786969

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{2141}}^1$

素因数の和:2240

約数の個数: 16

約数和(自身を含む): 25361280

約数和(自身を除く): 4574311

約数列:

[1, 7, 19, 73, 133, 511, 1387, 2141, 9709, 14987, 40679, 156293, 284753, 1094051, 2969567, 20786969]

約数ペア:

[(1, 20786969), (7, 2969567), (19, 1094051), (73, 284753), (133, 156293), (511, 40679), (1387, 14987), (2141, 9709)]