21321027

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3719}}^1$

素因数の和:3752

約数の個数: 36

約数和(自身を含む): 38591280

約数和(自身を除く): 17270253

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 441, 637, 819, 1911, 3719, 5733, 11157, 26033, 33471, 48347, 78099, 145041, 182231, 234297, 338429, 435123, 546693, 1015287, 1640079, 2369003, 3045861, 7107009, 21321027]

約数ペア:

[(1, 21321027), (3, 7107009), (7, 3045861), (9, 2369003), (13, 1640079), (21, 1015287), (39, 546693), (49, 435123), (63, 338429), (91, 234297), (117, 182231), (147, 145041), (273, 78099), (441, 48347), (637, 33471), (819, 26033), (1911, 11157), (3719, 5733)]