20939996

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67987}}^1$

素因数の和:68009

約数の個数: 24

約数和(自身を含む): 45687936

約数和(自身を除く): 24747940

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 67987, 135974, 271948, 475909, 747857, 951818, 1495714, 1903636, 2991428, 5234999, 10469998, 20939996]

約数ペア:

[(1, 20939996), (2, 10469998), (4, 5234999), (7, 2991428), (11, 1903636), (14, 1495714), (22, 951818), (28, 747857), (44, 475909), (77, 271948), (154, 135974), (308, 67987)]