20161820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{144013}}^1$

素因数の和:144029

約数の個数: 24

約数和(自身を含む): 48388704

約数和(自身を除く): 28226884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 144013, 288026, 576052, 720065, 1008091, 1440130, 2016182, 2880260, 4032364, 5040455, 10080910, 20161820]

約数ペア:

[(1, 20161820), (2, 10080910), (4, 5040455), (5, 4032364), (7, 2880260), (10, 2016182), (14, 1440130), (20, 1008091), (28, 720065), (35, 576052), (70, 288026), (140, 144013)]