21144580

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{7717}}^1$

素因数の和:7863

約数の個数: 24

約数和(自身を含む): 44733528

約数和(自身を除く): 23588948

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 7717, 15434, 30868, 38585, 77170, 154340, 1057229, 2114458, 4228916, 5286145, 10572290, 21144580]

約数ペア:

[(1, 21144580), (2, 10572290), (4, 5286145), (5, 4228916), (10, 2114458), (20, 1057229), (137, 154340), (274, 77170), (548, 38585), (685, 30868), (1370, 15434), (2740, 7717)]