19790450

素因数分解:

$2^1\times 5^2\times {\mathrm{397}}^1\times {\mathrm{997}}^1$

素因数の和:1406

約数の個数: 24

約数和(自身を含む): 36939972

約数和(自身を除く): 17149522

約数列:

[1, 2, 5, 10, 25, 50, 397, 794, 997, 1985, 1994, 3970, 4985, 9925, 9970, 19850, 24925, 49850, 395809, 791618, 1979045, 3958090, 9895225, 19790450]

約数ペア:

[(1, 19790450), (2, 9895225), (5, 3958090), (10, 1979045), (25, 791618), (50, 395809), (397, 49850), (794, 24925), (997, 19850), (1985, 9970), (1994, 9925), (3970, 4985)]