21782005

素因数分解:

$5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{2671}}^1$

素因数の和:2916

約数の個数: 16

約数和(自身を含む): 30011904

約数和(自身を除く): 8229899

約数列:

[1, 5, 7, 35, 233, 1165, 1631, 2671, 8155, 13355, 18697, 93485, 622343, 3111715, 4356401, 21782005]

約数ペア:

[(1, 21782005), (5, 4356401), (7, 3111715), (35, 622343), (233, 93485), (1165, 18697), (1631, 13355), (2671, 8155)]