21137020

素因数分解:

$2^2\times 5^1\times {\mathrm{293}}^1\times {\mathrm{3607}}^1$

素因数の和:3909

約数の個数: 24

約数和(自身を含む): 44551584

約数和(自身を除く): 23414564

約数列:

[1, 2, 4, 5, 10, 20, 293, 586, 1172, 1465, 2930, 3607, 5860, 7214, 14428, 18035, 36070, 72140, 1056851, 2113702, 4227404, 5284255, 10568510, 21137020]

約数ペア:

[(1, 21137020), (2, 10568510), (4, 5284255), (5, 4227404), (10, 2113702), (20, 1056851), (293, 72140), (586, 36070), (1172, 18035), (1465, 14428), (2930, 7214), (3607, 5860)]