20654284

素因数分解:

$2^2\times 7^2\times {\mathrm{105379}}^1$

素因数の和:105397

約数の個数: 18

約数和(自身を含む): 42046620

約数和(自身を除く): 21392336

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 105379, 210758, 421516, 737653, 1475306, 2950612, 5163571, 10327142, 20654284]

約数ペア:

[(1, 20654284), (2, 10327142), (4, 5163571), (7, 2950612), (14, 1475306), (28, 737653), (49, 421516), (98, 210758), (196, 105379)]