21371209

素因数分解:

${\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{173}}^1$

素因数の和:368

約数の個数: 16

約数和(自身を含む): 23151744

約数和(自身を除く): 1780535

約数列:

[1, 23, 41, 131, 173, 943, 3013, 3979, 5371, 7093, 22663, 123533, 163139, 521249, 929183, 21371209]

約数ペア:

[(1, 21371209), (23, 929183), (41, 521249), (131, 163139), (173, 123533), (943, 22663), (3013, 7093), (3979, 5371)]