21253070

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{31721}}^1$

素因数の和:31795

約数の個数: 16

約数和(自身を含む): 38827728

約数和(自身を除く): 17574658

約数列:

[1, 2, 5, 10, 67, 134, 335, 670, 31721, 63442, 158605, 317210, 2125307, 4250614, 10626535, 21253070]

約数ペア:

[(1, 21253070), (2, 10626535), (5, 4250614), (10, 2125307), (67, 317210), (134, 158605), (335, 63442), (670, 31721)]