21172484

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{74551}}^1$

素因数の和:74626

約数の個数: 12

約数和(自身を含む): 37574208

約数和(自身を除く): 16401724

約数列:

[1, 2, 4, 71, 142, 284, 74551, 149102, 298204, 5293121, 10586242, 21172484]

約数ペア:

[(1, 21172484), (2, 10586242), (4, 5293121), (71, 298204), (142, 149102), (284, 74551)]