21505834

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{80849}}^1$

素因数の和:80877

約数の個数: 16

約数和(自身を含む): 38808000

約数和(自身を除く): 17302166

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 80849, 161698, 565943, 1131886, 1536131, 3072262, 10752917, 21505834]

約数ペア:

[(1, 21505834), (2, 10752917), (7, 3072262), (14, 1536131), (19, 1131886), (38, 565943), (133, 161698), (266, 80849)]