20452240

素因数分解:

$2^4\times 5^1\times {\mathrm{255653}}^1$

素因数の和:255666

約数の個数: 20

約数和(自身を含む): 47551644

約数和(自身を除く): 27099404

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 255653, 511306, 1022612, 1278265, 2045224, 2556530, 4090448, 5113060, 10226120, 20452240]

約数ペア:

[(1, 20452240), (2, 10226120), (4, 5113060), (5, 4090448), (8, 2556530), (10, 2045224), (16, 1278265), (20, 1022612), (40, 511306), (80, 255653)]