20972240

素因数分解:

$2^4\times 5^1\times {\mathrm{262153}}^1$

素因数の和:262166

約数の個数: 20

約数和(自身を含む): 48760644

約数和(自身を除く): 27788404

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 262153, 524306, 1048612, 1310765, 2097224, 2621530, 4194448, 5243060, 10486120, 20972240]

約数ペア:

[(1, 20972240), (2, 10486120), (4, 5243060), (5, 4194448), (8, 2621530), (10, 2097224), (16, 1310765), (20, 1048612), (40, 524306), (80, 262153)]