21371581

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{433}}^1\times {\mathrm{641}}^1$

素因数の和:1092

約数の個数: 16

約数和(自身を含む): 26748288

約数和(自身を除く): 5376707

約数列:

[1, 7, 11, 77, 433, 641, 3031, 4487, 4763, 7051, 33341, 49357, 277553, 1942871, 3053083, 21371581]

約数ペア:

[(1, 21371581), (7, 3053083), (11, 1942871), (77, 277553), (433, 49357), (641, 33341), (3031, 7051), (4487, 4763)]