20091820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{143513}}^1$

素因数の和:143529

約数の個数: 24

約数和(自身を含む): 48220704

約数和(自身を除く): 28128884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 143513, 287026, 574052, 717565, 1004591, 1435130, 2009182, 2870260, 4018364, 5022955, 10045910, 20091820]

約数ペア:

[(1, 20091820), (2, 10045910), (4, 5022955), (5, 4018364), (7, 2870260), (10, 2009182), (14, 1435130), (20, 1004591), (28, 717565), (35, 574052), (70, 287026), (140, 143513)]