3987865

素因数分解:

$5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:457

約数の個数: 24

約数和(自身を含む): 5716872

約数和(自身を除く): 1729007

約数列:

[1, 5, 7, 35, 41, 49, 205, 245, 287, 397, 1435, 1985, 2009, 2779, 10045, 13895, 16277, 19453, 81385, 97265, 113939, 569695, 797573, 3987865]

約数ペア:

[(1, 3987865), (5, 797573), (7, 569695), (35, 113939), (41, 97265), (49, 81385), (205, 19453), (245, 16277), (287, 13895), (397, 10045), (1435, 2779), (1985, 2009)]