20928460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149489}}^1$

素因数の和:149505

約数の個数: 24

約数和(自身を含む): 50228640

約数和(自身を除く): 29300180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149489, 298978, 597956, 747445, 1046423, 1494890, 2092846, 2989780, 4185692, 5232115, 10464230, 20928460]

約数ペア:

[(1, 20928460), (2, 10464230), (4, 5232115), (5, 4185692), (7, 2989780), (10, 2092846), (14, 1494890), (20, 1046423), (28, 747445), (35, 597956), (70, 298978), (140, 149489)]