20924421

素因数分解:

$3^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{1039}}^1$

素因数の和:1193

約数の個数: 24

約数和(自身を含む): 32722560

約数和(自身を除く): 11798139

約数列:

[1, 3, 7, 21, 49, 137, 147, 411, 959, 1039, 2877, 3117, 6713, 7273, 20139, 21819, 50911, 142343, 152733, 427029, 996401, 2989203, 6974807, 20924421]

約数ペア:

[(1, 20924421), (3, 6974807), (7, 2989203), (21, 996401), (49, 427029), (137, 152733), (147, 142343), (411, 50911), (959, 21819), (1039, 20139), (2877, 7273), (3117, 6713)]