21038563

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{4919}}^1$

素因数の和:4986

約数の個数: 16

約数和(自身を含む): 26449920

約数和(自身を除く): 5411357

約数列:

[1, 7, 13, 47, 91, 329, 611, 4277, 4919, 34433, 63947, 231193, 447629, 1618351, 3005509, 21038563]

約数ペア:

[(1, 21038563), (7, 3005509), (13, 1618351), (47, 447629), (91, 231193), (329, 63947), (611, 34433), (4277, 4919)]