20683755

素因数分解:

$3^4\times 5^1\times {\mathrm{51071}}^1$

素因数の和:51088

約数の個数: 20

約数和(自身を含む): 37078272

約数和(自身を除く): 16394517

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51071, 153213, 255355, 459639, 766065, 1378917, 2298195, 4136751, 6894585, 20683755]

約数ペア:

[(1, 20683755), (3, 6894585), (5, 4136751), (9, 2298195), (15, 1378917), (27, 766065), (45, 459639), (81, 255355), (135, 153213), (405, 51071)]