20853475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{353}}^1$

素因数の和:519

約数の個数: 24

約数和(自身を含む): 27654480

約数和(自身を除く): 6801005

約数列:

[1, 5, 17, 25, 85, 139, 353, 425, 695, 1765, 2363, 3475, 6001, 8825, 11815, 30005, 49067, 59075, 150025, 245335, 834139, 1226675, 4170695, 20853475]

約数ペア:

[(1, 20853475), (5, 4170695), (17, 1226675), (25, 834139), (85, 245335), (139, 150025), (353, 59075), (425, 49067), (695, 30005), (1765, 11815), (2363, 8825), (3475, 6001)]