19936420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142403}}^1$

素因数の和:142419

約数の個数: 24

約数和(自身を含む): 47847744

約数和(自身を除く): 27911324

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142403, 284806, 569612, 712015, 996821, 1424030, 1993642, 2848060, 3987284, 4984105, 9968210, 19936420]

約数ペア:

[(1, 19936420), (2, 9968210), (4, 4984105), (5, 3987284), (7, 2848060), (10, 1993642), (14, 1424030), (20, 996821), (28, 712015), (35, 569612), (70, 284806), (140, 142403)]