21219710

素因数分解:

$2^1\times 5^1\times {\mathrm{919}}^1\times {\mathrm{2309}}^1$

素因数の和:3235

約数の個数: 16

約数和(自身を含む): 38253600

約数和(自身を除く): 17033890

約数列:

[1, 2, 5, 10, 919, 1838, 2309, 4595, 4618, 9190, 11545, 23090, 2121971, 4243942, 10609855, 21219710]

約数ペア:

[(1, 21219710), (2, 10609855), (5, 4243942), (10, 2121971), (919, 23090), (1838, 11545), (2309, 9190), (4595, 4618)]