90018945

素因数分解:

$3^4\times 5^1\times {\mathrm{222269}}^1$

素因数の和:222286

約数の個数: 20

約数和(自身を含む): 161368020

約数和(自身を除く): 71349075

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 222269, 666807, 1111345, 2000421, 3334035, 6001263, 10002105, 18003789, 30006315, 90018945]

約数ペア:

[(1, 90018945), (3, 30006315), (5, 18003789), (9, 10002105), (15, 6001263), (27, 3334035), (45, 2000421), (81, 1111345), (135, 666807), (405, 222269)]