20907585

素因数分解:

$3^3\times 5^1\times {\mathrm{154871}}^1$

素因数の和:154885

約数の個数: 16

約数和(自身を含む): 37169280

約数和(自身を除く): 16261695

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 154871, 464613, 774355, 1393839, 2323065, 4181517, 6969195, 20907585]

約数ペア:

[(1, 20907585), (3, 6969195), (5, 4181517), (9, 2323065), (15, 1393839), (27, 774355), (45, 464613), (135, 154871)]