20457136

素因数分解:

$2^4\times 7^1\times {\mathrm{182653}}^1$

素因数の和:182668

約数の個数: 20

約数和(自身を含む): 45298192

約数和(自身を除く): 24841056

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 182653, 365306, 730612, 1278571, 1461224, 2557142, 2922448, 5114284, 10228568, 20457136]

約数ペア:

[(1, 20457136), (2, 10228568), (4, 5114284), (7, 2922448), (8, 2557142), (14, 1461224), (16, 1278571), (28, 730612), (56, 365306), (112, 182653)]