21340876

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{14779}}^1$

素因数の和:14821

約数の個数: 18

約数和(自身を含む): 39418260

約数和(自身を除く): 18077384

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 14779, 29558, 59116, 280801, 561602, 1123204, 5335219, 10670438, 21340876]

約数ペア:

[(1, 21340876), (2, 10670438), (4, 5335219), (19, 1123204), (38, 561602), (76, 280801), (361, 59116), (722, 29558), (1444, 14779)]