21716812

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{417631}}^1$

素因数の和:417648

約数の個数: 12

約数和(自身を含む): 40927936

約数和(自身を除く): 19211124

約数列:

[1, 2, 4, 13, 26, 52, 417631, 835262, 1670524, 5429203, 10858406, 21716812]

約数ペア:

[(1, 21716812), (2, 10858406), (4, 5429203), (13, 1670524), (26, 835262), (52, 417631)]