21905114

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{193}}^1$

素因数の和:291

約数の個数: 48

約数和(自身を含む): 42108864

約数和(自身を除く): 20203750

約数列:

[1, 2, 7, 11, 14, 22, 67, 77, 121, 134, 154, 193, 242, 386, 469, 737, 847, 938, 1351, 1474, 1694, 2123, 2702, 4246, 5159, 8107, 10318, 12931, 14861, 16214, 23353, 25862, 29722, 46706, 56749, 90517, 113498, 142241, 163471, 181034, 284482, 326942, 995687, 1564651, 1991374, 3129302, 10952557, 21905114]

約数ペア:

[(1, 21905114), (2, 10952557), (7, 3129302), (11, 1991374), (14, 1564651), (22, 995687), (67, 326942), (77, 284482), (121, 181034), (134, 163471), (154, 142241), (193, 113498), (242, 90517), (386, 56749), (469, 46706), (737, 29722), (847, 25862), (938, 23353), (1351, 16214), (1474, 14861), (1694, 12931), (2123, 10318), (2702, 8107), (4246, 5159)]