21248900

素因数分解:

$2^2\times 5^2\times {\mathrm{103}}^1\times {\mathrm{2063}}^1$

素因数の和:2180

約数の個数: 36

約数和(自身を含む): 46580352

約数和(自身を除く): 25331452

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 103, 206, 412, 515, 1030, 2060, 2063, 2575, 4126, 5150, 8252, 10300, 10315, 20630, 41260, 51575, 103150, 206300, 212489, 424978, 849956, 1062445, 2124890, 4249780, 5312225, 10624450, 21248900]

約数ペア:

[(1, 21248900), (2, 10624450), (4, 5312225), (5, 4249780), (10, 2124890), (20, 1062445), (25, 849956), (50, 424978), (100, 212489), (103, 206300), (206, 103150), (412, 51575), (515, 41260), (1030, 20630), (2060, 10315), (2063, 10300), (2575, 8252), (4126, 5150)]