206513145

素因数分解:

$3^4\times 5^1\times {\mathrm{509909}}^1$

素因数の和:509926

約数の個数: 20

約数和(自身を含む): 370194660

約数和(自身を除く): 163681515

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 509909, 1529727, 2549545, 4589181, 7648635, 13767543, 22945905, 41302629, 68837715, 206513145]

約数ペア:

[(1, 206513145), (3, 68837715), (5, 41302629), (9, 22945905), (15, 13767543), (27, 7648635), (45, 4589181), (81, 2549545), (135, 1529727), (405, 509909)]