21921885

素因数分解:

$3^2\times 5^1\times {\mathrm{619}}^1\times {\mathrm{787}}^1$

素因数の和:1417

約数の個数: 24

約数和(自身を含む): 38107680

約数和(自身を除く): 16185795

約数列:

[1, 3, 5, 9, 15, 45, 619, 787, 1857, 2361, 3095, 3935, 5571, 7083, 9285, 11805, 27855, 35415, 487153, 1461459, 2435765, 4384377, 7307295, 21921885]

約数ペア:

[(1, 21921885), (3, 7307295), (5, 4384377), (9, 2435765), (15, 1461459), (45, 487153), (619, 35415), (787, 27855), (1857, 11805), (2361, 9285), (3095, 7083), (3935, 5571)]