21036321

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{613}}^1$

素因数の和:694

約数の個数: 32

約数和(自身を含む): 33008640

約数和(自身を除く): 11972319

約数列:

[1, 3, 9, 27, 31, 41, 93, 123, 279, 369, 613, 837, 1107, 1271, 1839, 3813, 5517, 11439, 16551, 19003, 25133, 34317, 57009, 75399, 171027, 226197, 513081, 678591, 779123, 2337369, 7012107, 21036321]

約数ペア:

[(1, 21036321), (3, 7012107), (9, 2337369), (27, 779123), (31, 678591), (41, 513081), (93, 226197), (123, 171027), (279, 75399), (369, 57009), (613, 34317), (837, 25133), (1107, 19003), (1271, 16551), (1839, 11439), (3813, 5517)]