20639187

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{881}}^1$

素因数の和:1043

約数の個数: 24

約数和(自身を含む): 31646160

約数和(自身を除く): 11006973

約数列:

[1, 3, 9, 19, 57, 137, 171, 411, 881, 1233, 2603, 2643, 7809, 7929, 16739, 23427, 50217, 120697, 150651, 362091, 1086273, 2293243, 6879729, 20639187]

約数ペア:

[(1, 20639187), (3, 6879729), (9, 2293243), (19, 1086273), (57, 362091), (137, 150651), (171, 120697), (411, 50217), (881, 23427), (1233, 16739), (2603, 7929), (2643, 7809)]