21052899

素因数分解:

$3^3\times 7^2\times {\mathrm{15913}}^1$

素因数の和:15936

約数の個数: 24

約数和(自身を含む): 36283920

約数和(自身を除く): 15231021

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15913, 47739, 111391, 143217, 334173, 429651, 779737, 1002519, 2339211, 3007557, 7017633, 21052899]

約数ペア:

[(1, 21052899), (3, 7017633), (7, 3007557), (9, 2339211), (21, 1002519), (27, 779737), (49, 429651), (63, 334173), (147, 143217), (189, 111391), (441, 47739), (1323, 15913)]