21082900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4903}}^1$

素因数の和:4960

約数の個数: 36

約数和(自身を含む): 46823392

約数和(自身を除く): 25740492

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 4903, 9806, 19612, 24515, 49030, 98060, 122575, 210829, 245150, 421658, 490300, 843316, 1054145, 2108290, 4216580, 5270725, 10541450, 21082900]

約数ペア:

[(1, 21082900), (2, 10541450), (4, 5270725), (5, 4216580), (10, 2108290), (20, 1054145), (25, 843316), (43, 490300), (50, 421658), (86, 245150), (100, 210829), (172, 122575), (215, 98060), (430, 49030), (860, 24515), (1075, 19612), (2150, 9806), (4300, 4903)]