21168281

素因数分解:

${\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:364

約数の個数: 16

約数和(自身を含む): 23101200

約数和(自身を除く): 1932919

約数列:

[1, 17, 61, 137, 149, 1037, 2329, 2533, 8357, 9089, 20413, 142069, 154513, 347021, 1245193, 21168281]

約数ペア:

[(1, 21168281), (17, 1245193), (61, 347021), (137, 154513), (149, 142069), (1037, 20413), (2329, 9089), (2533, 8357)]