21558105

素因数分解:

$3^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{839}}^1$

素因数の和:1421

約数の個数: 24

約数和(自身を含む): 37477440

約数和(自身を除く): 15919335

約数列:

[1, 3, 5, 9, 15, 45, 571, 839, 1713, 2517, 2855, 4195, 5139, 7551, 8565, 12585, 25695, 37755, 479069, 1437207, 2395345, 4311621, 7186035, 21558105]

約数ペア:

[(1, 21558105), (3, 7186035), (5, 4311621), (9, 2395345), (15, 1437207), (45, 479069), (571, 37755), (839, 25695), (1713, 12585), (2517, 8565), (2855, 7551), (4195, 5139)]