20897865

素因数分解:

$3^3\times 5^1\times {\mathrm{154799}}^1$

素因数の和:154813

約数の個数: 16

約数和(自身を含む): 37152000

約数和(自身を除く): 16254135

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 154799, 464397, 773995, 1393191, 2321985, 4179573, 6965955, 20897865]

約数ペア:

[(1, 20897865), (3, 6965955), (5, 4179573), (9, 2321985), (15, 1393191), (27, 773995), (45, 464397), (135, 154799)]