21462021

素因数分解:

$3^2\times 7^1\times {\mathrm{443}}^1\times {\mathrm{769}}^1$

素因数の和:1225

約数の個数: 24

約数和(自身を含む): 35555520

約数和(自身を除く): 14093499

約数列:

[1, 3, 7, 9, 21, 63, 443, 769, 1329, 2307, 3101, 3987, 5383, 6921, 9303, 16149, 27909, 48447, 340667, 1022001, 2384669, 3066003, 7154007, 21462021]

約数ペア:

[(1, 21462021), (3, 7154007), (7, 3066003), (9, 2384669), (21, 1022001), (63, 340667), (443, 48447), (769, 27909), (1329, 16149), (2307, 9303), (3101, 6921), (3987, 5383)]