21481695

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9007}}^1$

素因数の和:9071

約数の個数: 24

約数和(自身を含む): 37941696

約数和(自身を除く): 16460001

約数列:

[1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795, 2385, 9007, 27021, 45035, 81063, 135105, 405315, 477371, 1432113, 2386855, 4296339, 7160565, 21481695]

約数ペア:

[(1, 21481695), (3, 7160565), (5, 4296339), (9, 2386855), (15, 1432113), (45, 477371), (53, 405315), (159, 135105), (265, 81063), (477, 45035), (795, 27021), (2385, 9007)]