21047125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{15307}}^1$

素因数の和:15333

約数の個数: 16

約数和(自身を含む): 28656576

約数和(自身を除く): 7609451

約数列:

[1, 5, 11, 25, 55, 125, 275, 1375, 15307, 76535, 168377, 382675, 841885, 1913375, 4209425, 21047125]

約数ペア:

[(1, 21047125), (5, 4209425), (11, 1913375), (25, 841885), (55, 382675), (125, 168377), (275, 76535), (1375, 15307)]