21402425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{349}}^1$

素因数の和:593

約数の個数: 24

約数和(自身を含む): 29164800

約数和(自身を除く): 7762375

約数列:

[1, 5, 11, 25, 55, 223, 275, 349, 1115, 1745, 2453, 3839, 5575, 8725, 12265, 19195, 61325, 77827, 95975, 389135, 856097, 1945675, 4280485, 21402425]

約数ペア:

[(1, 21402425), (5, 4280485), (11, 1945675), (25, 856097), (55, 389135), (223, 95975), (275, 77827), (349, 61325), (1115, 19195), (1745, 12265), (2453, 8725), (3839, 5575)]