19872945

素因数分解:

$3^4\times 5^1\times {\mathrm{49069}}^1$

素因数の和:49086

約数の個数: 20

約数和(自身を含む): 35624820

約数和(自身を除く): 15751875

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 49069, 147207, 245345, 441621, 736035, 1324863, 2208105, 3974589, 6624315, 19872945]

約数ペア:

[(1, 19872945), (3, 6624315), (5, 3974589), (9, 2208105), (15, 1324863), (27, 736035), (45, 441621), (81, 245345), (135, 147207), (405, 49069)]