21103987

素因数分解:

${\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{433}}^1$

素因数の和:558

約数の個数: 16

約数和(自身を含む): 23248512

約数和(自身を除く): 2144525

約数列:

[1, 17, 47, 61, 433, 799, 1037, 2867, 7361, 20351, 26413, 48739, 345967, 449021, 1241411, 21103987]

約数ペア:

[(1, 21103987), (17, 1241411), (47, 449021), (61, 345967), (433, 48739), (799, 26413), (1037, 20351), (2867, 7361)]