21805708

素因数分解:

$2^2\times {\mathrm{1319}}^1\times {\mathrm{4133}}^1$

素因数の和:5456

約数の個数: 12

約数和(自身を含む): 38198160

約数和(自身を除く): 16392452

約数列:

[1, 2, 4, 1319, 2638, 4133, 5276, 8266, 16532, 5451427, 10902854, 21805708]

約数ペア:

[(1, 21805708), (2, 10902854), (4, 5451427), (1319, 16532), (2638, 8266), (4133, 5276)]