20719845

素因数分解:

$3^2\times 5^1\times {\mathrm{283}}^1\times {\mathrm{1627}}^1$

素因数の和:1921

約数の個数: 24

約数和(自身を含む): 36063456

約数和(自身を除く): 15343611

約数列:

[1, 3, 5, 9, 15, 45, 283, 849, 1415, 1627, 2547, 4245, 4881, 8135, 12735, 14643, 24405, 73215, 460441, 1381323, 2302205, 4143969, 6906615, 20719845]

約数ペア:

[(1, 20719845), (3, 6906615), (5, 4143969), (9, 2302205), (15, 1381323), (45, 460441), (283, 73215), (849, 24405), (1415, 14643), (1627, 12735), (2547, 8135), (4245, 4881)]