72780820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{519863}}^1$

素因数の和:519879

約数の個数: 24

約数和(自身を含む): 174674304

約数和(自身を除く): 101893484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 519863, 1039726, 2079452, 2599315, 3639041, 5198630, 7278082, 10397260, 14556164, 18195205, 36390410, 72780820]

約数ペア:

[(1, 72780820), (2, 36390410), (4, 18195205), (5, 14556164), (7, 10397260), (10, 7278082), (14, 5198630), (20, 3639041), (28, 2599315), (35, 2079452), (70, 1039726), (140, 519863)]