21126239

素因数分解:

${\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:310

約数の個数: 16

約数和(自身を含む): 22619520

約数和(自身を除く): 1493281

約数列:

[1, 29, 67, 83, 131, 1943, 2407, 3799, 5561, 8777, 10873, 161269, 254533, 315317, 728491, 21126239]

約数ペア:

[(1, 21126239), (29, 728491), (67, 315317), (83, 254533), (131, 161269), (1943, 10873), (2407, 8777), (3799, 5561)]