21252472

素因数分解:

$2^3\times {\mathrm{661}}^1\times {\mathrm{4019}}^1$

素因数の和:4686

約数の個数: 16

約数和(自身を含む): 39918600

約数和(自身を除く): 18666128

約数列:

[1, 2, 4, 8, 661, 1322, 2644, 4019, 5288, 8038, 16076, 32152, 2656559, 5313118, 10626236, 21252472]

約数ペア:

[(1, 21252472), (2, 10626236), (4, 5313118), (8, 2656559), (661, 32152), (1322, 16076), (2644, 8038), (4019, 5288)]