21346765

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{2011}}^1$

素因数の和:2220

約数の個数: 16

約数和(自身を含む): 28103616

約数和(自身を除く): 6756851

約数列:

[1, 5, 11, 55, 193, 965, 2011, 2123, 10055, 10615, 22121, 110605, 388123, 1940615, 4269353, 21346765]

約数ペア:

[(1, 21346765), (5, 4269353), (11, 1940615), (55, 388123), (193, 110605), (965, 22121), (2011, 10615), (2123, 10055)]