21291765

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{11731}}^1$

素因数の和:11761

約数の個数: 24

約数和(自身を含む): 37448544

約数和(自身を除く): 16156779

約数列:

[1, 3, 5, 11, 15, 33, 55, 121, 165, 363, 605, 1815, 11731, 35193, 58655, 129041, 175965, 387123, 645205, 1419451, 1935615, 4258353, 7097255, 21291765]

約数ペア:

[(1, 21291765), (3, 7097255), (5, 4258353), (11, 1935615), (15, 1419451), (33, 645205), (55, 387123), (121, 175965), (165, 129041), (363, 58655), (605, 35193), (1815, 11731)]