20920305

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28463}}^1$

素因数の和:28485

約数の個数: 24

約数和(自身を含む): 38938752

約数和(自身を除く): 18018447

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28463, 85389, 142315, 199241, 426945, 597723, 996205, 1394687, 2988615, 4184061, 6973435, 20920305]

約数ペア:

[(1, 20920305), (3, 6973435), (5, 4184061), (7, 2988615), (15, 1394687), (21, 996205), (35, 597723), (49, 426945), (105, 199241), (147, 142315), (245, 85389), (735, 28463)]