20723445

素因数分解:

$3^4\times 5^1\times {\mathrm{51169}}^1$

素因数の和:51186

約数の個数: 20

約数和(自身を含む): 37149420

約数和(自身を除く): 16425975

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51169, 153507, 255845, 460521, 767535, 1381563, 2302605, 4144689, 6907815, 20723445]

約数ペア:

[(1, 20723445), (3, 6907815), (5, 4144689), (9, 2302605), (15, 1381563), (27, 767535), (45, 460521), (81, 255845), (135, 153507), (405, 51169)]