19738460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{140989}}^1$

素因数の和:141005

約数の個数: 24

約数和(自身を含む): 47372640

約数和(自身を除く): 27634180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 140989, 281978, 563956, 704945, 986923, 1409890, 1973846, 2819780, 3947692, 4934615, 9869230, 19738460]

約数ペア:

[(1, 19738460), (2, 9869230), (4, 4934615), (5, 3947692), (7, 2819780), (10, 1973846), (14, 1409890), (20, 986923), (28, 704945), (35, 563956), (70, 281978), (140, 140989)]