1021005

素因数分解:

$3^4\times 5^1\times {\mathrm{2521}}^1$

素因数の和:2538

約数の個数: 20

約数和(自身を含む): 1830972

約数和(自身を除く): 809967

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 2521, 7563, 12605, 22689, 37815, 68067, 113445, 204201, 340335, 1021005]

約数ペア:

[(1, 1021005), (3, 340335), (5, 204201), (9, 113445), (15, 68067), (27, 37815), (45, 22689), (81, 12605), (135, 7563), (405, 2521)]