21765980

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{3083}}^1$

素因数の和:3445

約数の個数: 24

約数和(自身を含む): 45852912

約数和(自身を除く): 24086932

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 3083, 3530, 6166, 7060, 12332, 15415, 30830, 61660, 1088299, 2176598, 4353196, 5441495, 10882990, 21765980]

約数ペア:

[(1, 21765980), (2, 10882990), (4, 5441495), (5, 4353196), (10, 2176598), (20, 1088299), (353, 61660), (706, 30830), (1412, 15415), (1765, 12332), (3083, 7060), (3530, 6166)]