686420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{4903}}^1$

素因数の和:4919

約数の個数: 24

約数和(自身を含む): 1647744

約数和(自身を除く): 961324

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 4903, 9806, 19612, 24515, 34321, 49030, 68642, 98060, 137284, 171605, 343210, 686420]

約数ペア:

[(1, 686420), (2, 343210), (4, 171605), (5, 137284), (7, 98060), (10, 68642), (14, 49030), (20, 34321), (28, 24515), (35, 19612), (70, 9806), (140, 4903)]