21783321

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{11923}}^1$

素因数の和:11965

約数の個数: 24

約数和(自身を含む): 37202880

約数和(自身を除く): 15419559

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 11923, 35769, 83461, 107307, 250383, 345767, 751149, 1037301, 2420369, 3111903, 7261107, 21783321]

約数ペア:

[(1, 21783321), (3, 7261107), (7, 3111903), (9, 2420369), (21, 1037301), (29, 751149), (63, 345767), (87, 250383), (203, 107307), (261, 83461), (609, 35769), (1827, 11923)]