21488061

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 33758208

約数和(自身を除く): 12270147

約数列:

[1, 3, 7, 21, 73, 107, 131, 219, 321, 393, 511, 749, 917, 1533, 2247, 2751, 7811, 9563, 14017, 23433, 28689, 42051, 54677, 66941, 98119, 164031, 200823, 294357, 1023241, 3069723, 7162687, 21488061]

約数ペア:

[(1, 21488061), (3, 7162687), (7, 3069723), (21, 1023241), (73, 294357), (107, 200823), (131, 164031), (219, 98119), (321, 66941), (393, 54677), (511, 42051), (749, 28689), (917, 23433), (1533, 14017), (2247, 9563), (2751, 7811)]