19492700

素因数分解:

$2^2\times 5^2\times {\mathrm{397}}^1\times {\mathrm{491}}^1$

素因数の和:902

約数の個数: 36

約数和(自身を含む): 42492072

約数和(自身を除く): 22999372

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 397, 491, 794, 982, 1588, 1964, 1985, 2455, 3970, 4910, 7940, 9820, 9925, 12275, 19850, 24550, 39700, 49100, 194927, 389854, 779708, 974635, 1949270, 3898540, 4873175, 9746350, 19492700]

約数ペア:

[(1, 19492700), (2, 9746350), (4, 4873175), (5, 3898540), (10, 1949270), (20, 974635), (25, 779708), (50, 389854), (100, 194927), (397, 49100), (491, 39700), (794, 24550), (982, 19850), (1588, 12275), (1964, 9925), (1985, 9820), (2455, 7940), (3970, 4910)]