21812385

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{293}}^1\times {\mathrm{709}}^1$

素因数の和:1017

約数の個数: 32

約数和(自身を含む): 40078080

約数和(自身を除く): 18265695

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 293, 709, 879, 1465, 2051, 2127, 3545, 4395, 4963, 6153, 10255, 10635, 14889, 24815, 30765, 74445, 207737, 623211, 1038685, 1454159, 3116055, 4362477, 7270795, 21812385]

約数ペア:

[(1, 21812385), (3, 7270795), (5, 4362477), (7, 3116055), (15, 1454159), (21, 1038685), (35, 623211), (105, 207737), (293, 74445), (709, 30765), (879, 24815), (1465, 14889), (2051, 10635), (2127, 10255), (3545, 6153), (4395, 4963)]