21153891

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{2383}}^1$

素因数の和:2666

約数の個数: 16

約数和(自身を含む): 30896640

約数和(自身を除く): 9742749

約数列:

[1, 3, 11, 33, 269, 807, 2383, 2959, 7149, 8877, 26213, 78639, 641027, 1923081, 7051297, 21153891]

約数ペア:

[(1, 21153891), (3, 7051297), (11, 1923081), (33, 641027), (269, 78639), (807, 26213), (2383, 8877), (2959, 7149)]