21641085

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28289}}^1$

素因数の和:28317

約数の個数: 24

約数和(自身を含む): 39719160

約数和(自身を除く): 18078075

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28289, 84867, 141445, 254601, 424335, 480913, 1273005, 1442739, 2404565, 4328217, 7213695, 21641085]

約数ペア:

[(1, 21641085), (3, 7213695), (5, 4328217), (9, 2404565), (15, 1442739), (17, 1273005), (45, 480913), (51, 424335), (85, 254601), (153, 141445), (255, 84867), (765, 28289)]