21666109

素因数分解:

${\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{277}}^1$

素因数の和:444

約数の個数: 16

約数和(自身を含む): 23779008

約数和(自身を除く): 2112899

約数列:

[1, 17, 43, 107, 277, 731, 1819, 4601, 4709, 11911, 29639, 78217, 202487, 503863, 1274477, 21666109]

約数ペア:

[(1, 21666109), (17, 1274477), (43, 503863), (107, 202487), (277, 78217), (731, 29639), (1819, 11911), (4601, 4709)]