865485

素因数分解:

$3^4\times 5^1\times {\mathrm{2137}}^1$

素因数の和:2154

約数の個数: 20

約数和(自身を含む): 1552188

約数和(自身を除く): 686703

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 2137, 6411, 10685, 19233, 32055, 57699, 96165, 173097, 288495, 865485]

約数ペア:

[(1, 865485), (3, 288495), (5, 173097), (9, 96165), (15, 57699), (27, 32055), (45, 19233), (81, 10685), (135, 6411), (405, 2137)]