20870745

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{198769}}^1$

素因数の和:198784

約数の個数: 16

約数和(自身を含む): 38163840

約数和(自身を除く): 17293095

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 198769, 596307, 993845, 1391383, 2981535, 4174149, 6956915, 20870745]

約数ペア:

[(1, 20870745), (3, 6956915), (5, 4174149), (7, 2981535), (15, 1391383), (21, 993845), (35, 596307), (105, 198769)]