19702060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{140729}}^1$

素因数の和:140745

約数の個数: 24

約数和(自身を含む): 47285280

約数和(自身を除く): 27583220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 140729, 281458, 562916, 703645, 985103, 1407290, 1970206, 2814580, 3940412, 4925515, 9851030, 19702060]

約数ペア:

[(1, 19702060), (2, 9851030), (4, 4925515), (5, 3940412), (7, 2814580), (10, 1970206), (14, 1407290), (20, 985103), (28, 703645), (35, 562916), (70, 281458), (140, 140729)]