28390005

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{90127}}^1$

素因数の和:90145

約数の個数: 24

約数和(自身を含む): 56239872

約数和(自身を除く): 27849867

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 90127, 270381, 450635, 630889, 811143, 1351905, 1892667, 3154445, 4055715, 5678001, 9463335, 28390005]

約数ペア:

[(1, 28390005), (3, 9463335), (5, 5678001), (7, 4055715), (9, 3154445), (15, 1892667), (21, 1351905), (35, 811143), (45, 630889), (63, 450635), (105, 270381), (315, 90127)]