1972900

素因数分解:

$2^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:304

約数の個数: 36

約数和(自身を含む): 4344340

約数和(自身を除く): 2371440

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 109, 181, 218, 362, 436, 545, 724, 905, 1090, 1810, 2180, 2725, 3620, 4525, 5450, 9050, 10900, 18100, 19729, 39458, 78916, 98645, 197290, 394580, 493225, 986450, 1972900]

約数ペア:

[(1, 1972900), (2, 986450), (4, 493225), (5, 394580), (10, 197290), (20, 98645), (25, 78916), (50, 39458), (100, 19729), (109, 18100), (181, 10900), (218, 9050), (362, 5450), (436, 4525), (545, 3620), (724, 2725), (905, 2180), (1090, 1810)]