21412503

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19993}}^1$

素因数の和:20023

約数の個数: 24

約数和(自身を含む): 37428768

約数和(自身を除く): 16016265

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19993, 59979, 139951, 179937, 339881, 419853, 1019643, 1259559, 2379167, 3058929, 7137501, 21412503]

約数ペア:

[(1, 21412503), (3, 7137501), (7, 3058929), (9, 2379167), (17, 1259559), (21, 1019643), (51, 419853), (63, 339881), (119, 179937), (153, 139951), (357, 59979), (1071, 19993)]