21205587

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{6551}}^1$

素因数の和:6650

約数の個数: 16

約数和(自身を含む): 30820608

約数和(自身を除く): 9615021

約数列:

[1, 3, 13, 39, 83, 249, 1079, 3237, 6551, 19653, 85163, 255489, 543733, 1631199, 7068529, 21205587]

約数ペア:

[(1, 21205587), (3, 7068529), (13, 1631199), (39, 543733), (83, 255489), (249, 85163), (1079, 19653), (3237, 6551)]