21536765

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{919}}^1$

素因数の和:1076

約数の個数: 16

約数和(自身を含む): 26716800

約数和(自身を除く): 5180035

約数列:

[1, 5, 43, 109, 215, 545, 919, 4595, 4687, 23435, 39517, 100171, 197585, 500855, 4307353, 21536765]

約数ペア:

[(1, 21536765), (5, 4307353), (43, 500855), (109, 197585), (215, 100171), (545, 39517), (919, 23435), (4595, 4687)]