20854840365

素因数分解:

$3^4\times 5^1\times {\mathrm{51493433}}^1$

素因数の和:51493450

約数の個数: 20

約数和(自身を含む): 37384233084

約数和(自身を除く): 16529392719

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51493433, 154480299, 257467165, 463440897, 772401495, 1390322691, 2317204485, 4170968073, 6951613455, 20854840365]

約数ペア:

[(1, 20854840365), (3, 6951613455), (5, 4170968073), (9, 2317204485), (15, 1390322691), (27, 772401495), (45, 463440897), (81, 257467165), (135, 154480299), (405, 51493433)]