20787860

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{45191}}^1$

素因数の和:45223

約数の個数: 24

約数和(自身を含む): 45553536

約数和(自身を除く): 24765676

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 45191, 90382, 180764, 225955, 451910, 903820, 1039393, 2078786, 4157572, 5196965, 10393930, 20787860]

約数ペア:

[(1, 20787860), (2, 10393930), (4, 5196965), (5, 4157572), (10, 2078786), (20, 1039393), (23, 903820), (46, 451910), (92, 225955), (115, 180764), (230, 90382), (460, 45191)]