21168441

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{2087}}^1$

素因数の和:2130

約数の個数: 36

約数和(自身を含む): 37132992

約数和(自身を除く): 15964551

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 147, 161, 207, 441, 483, 1127, 1449, 2087, 3381, 6261, 10143, 14609, 18783, 43827, 48001, 102263, 131481, 144003, 306789, 336007, 432009, 920367, 1008021, 2352049, 3024063, 7056147, 21168441]

約数ペア:

[(1, 21168441), (3, 7056147), (7, 3024063), (9, 2352049), (21, 1008021), (23, 920367), (49, 432009), (63, 336007), (69, 306789), (147, 144003), (161, 131481), (207, 102263), (441, 48001), (483, 43827), (1127, 18783), (1449, 14609), (2087, 10143), (3381, 6261)]