21591905

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{919}}^1$

素因数の和:1088

約数の個数: 16

約数和(自身を含む): 26849280

約数和(自身を除く): 5257375

約数列:

[1, 5, 37, 127, 185, 635, 919, 4595, 4699, 23495, 34003, 116713, 170015, 583565, 4318381, 21591905]

約数ペア:

[(1, 21591905), (5, 4318381), (37, 583565), (127, 170015), (185, 116713), (635, 34003), (919, 23495), (4595, 4699)]