72212420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{515803}}^1$

素因数の和:515819

約数の個数: 24

約数和(自身を含む): 173310144

約数和(自身を除く): 101097724

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 515803, 1031606, 2063212, 2579015, 3610621, 5158030, 7221242, 10316060, 14442484, 18053105, 36106210, 72212420]

約数ペア:

[(1, 72212420), (2, 36106210), (4, 18053105), (5, 14442484), (7, 10316060), (10, 7221242), (14, 5158030), (20, 3610621), (28, 2579015), (35, 2063212), (70, 1031606), (140, 515803)]