981315

素因数分解:

$3^4\times 5^1\times {\mathrm{2423}}^1$

素因数の和:2440

約数の個数: 20

約数和(自身を含む): 1759824

約数和(自身を除く): 778509

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 2423, 7269, 12115, 21807, 36345, 65421, 109035, 196263, 327105, 981315]

約数ペア:

[(1, 981315), (3, 327105), (5, 196263), (9, 109035), (15, 65421), (27, 36345), (45, 21807), (81, 12115), (135, 7269), (405, 2423)]