20506815

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65101}}^1$

素因数の和:65119

約数の個数: 24

約数和(自身を含む): 40623648

約数和(自身を除く): 20116833

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65101, 195303, 325505, 455707, 585909, 976515, 1367121, 2278535, 2929545, 4101363, 6835605, 20506815]

約数ペア:

[(1, 20506815), (3, 6835605), (5, 4101363), (7, 2929545), (9, 2278535), (15, 1367121), (21, 976515), (35, 585909), (45, 455707), (63, 325505), (105, 195303), (315, 65101)]