20697705

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65707}}^1$

素因数の和:65725

約数の個数: 24

約数和(自身を含む): 41001792

約数和(自身を除く): 20304087

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65707, 197121, 328535, 459949, 591363, 985605, 1379847, 2299745, 2956815, 4139541, 6899235, 20697705]

約数ペア:

[(1, 20697705), (3, 6899235), (5, 4139541), (7, 2956815), (9, 2299745), (15, 1379847), (21, 985605), (35, 591363), (45, 459949), (63, 328535), (105, 197121), (315, 65707)]