21188727

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{2089}}^1$

素因数の和:2132

約数の個数: 36

約数和(自身を含む): 37168560

約数和(自身を除く): 15979833

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 147, 161, 207, 441, 483, 1127, 1449, 2089, 3381, 6267, 10143, 14623, 18801, 43869, 48047, 102361, 131607, 144141, 307083, 336329, 432423, 921249, 1008987, 2354303, 3026961, 7062909, 21188727]

約数ペア:

[(1, 21188727), (3, 7062909), (7, 3026961), (9, 2354303), (21, 1008987), (23, 921249), (49, 432423), (63, 336329), (69, 307083), (147, 144141), (161, 131607), (207, 102361), (441, 48047), (483, 43869), (1127, 18801), (1449, 14623), (2089, 10143), (3381, 6267)]