1988145

素因数分解:

$3^4\times 5^1\times {\mathrm{4909}}^1$

素因数の和:4926

約数の個数: 20

約数和(自身を含む): 3564660

約数和(自身を除く): 1576515

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 4909, 14727, 24545, 44181, 73635, 132543, 220905, 397629, 662715, 1988145]

約数ペア:

[(1, 1988145), (3, 662715), (5, 397629), (9, 220905), (15, 132543), (27, 73635), (45, 44181), (81, 24545), (135, 14727), (405, 4909)]