21180320

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18911}}^1$

素因数の和:18933

約数の個数: 48

約数和(自身を含む): 57189888

約数和(自身を除く): 36009568

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18911, 37822, 75644, 94555, 132377, 151288, 189110, 264754, 302576, 378220, 529508, 605152, 661885, 756440, 1059016, 1323770, 1512880, 2118032, 2647540, 3025760, 4236064, 5295080, 10590160, 21180320]

約数ペア:

[(1, 21180320), (2, 10590160), (4, 5295080), (5, 4236064), (7, 3025760), (8, 2647540), (10, 2118032), (14, 1512880), (16, 1323770), (20, 1059016), (28, 756440), (32, 661885), (35, 605152), (40, 529508), (56, 378220), (70, 302576), (80, 264754), (112, 189110), (140, 151288), (160, 132377), (224, 94555), (280, 75644), (560, 37822), (1120, 18911)]