20304865

素因数分解:

$5^1\times 7^2\times {\mathrm{179}}^1\times {\mathrm{463}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 28563840

約数和(自身を除く): 8258975

約数列:

[1, 5, 7, 35, 49, 179, 245, 463, 895, 1253, 2315, 3241, 6265, 8771, 16205, 22687, 43855, 82877, 113435, 414385, 580139, 2900695, 4060973, 20304865]

約数ペア:

[(1, 20304865), (5, 4060973), (7, 2900695), (35, 580139), (49, 414385), (179, 113435), (245, 82877), (463, 43855), (895, 22687), (1253, 16205), (2315, 8771), (3241, 6265)]