20394745

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18797}}^1$

素因数の和:18840

約数の個数: 16

約数和(自身を含む): 28873728

約数和(自身を除く): 8478983

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 18797, 93985, 131579, 582707, 657895, 2913535, 4078949, 20394745]

約数ペア:

[(1, 20394745), (5, 4078949), (7, 2913535), (31, 657895), (35, 582707), (155, 131579), (217, 93985), (1085, 18797)]