21473415

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3433}}^1$

素因数の和:3583

約数の個数: 24

約数和(自身を含む): 37499280

約数和(自身を除く): 16025865

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 3433, 6255, 10299, 17165, 30897, 51495, 154485, 477187, 1431561, 2385935, 4294683, 7157805, 21473415]

約数ペア:

[(1, 21473415), (3, 7157805), (5, 4294683), (9, 2385935), (15, 1431561), (45, 477187), (139, 154485), (417, 51495), (695, 30897), (1251, 17165), (2085, 10299), (3433, 6255)]