20958345

素因数分解:

$3^4\times 5^1\times {\mathrm{51749}}^1$

素因数の和:51766

約数の個数: 20

約数和(自身を含む): 37570500

約数和(自身を除く): 16612155

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51749, 155247, 258745, 465741, 776235, 1397223, 2328705, 4191669, 6986115, 20958345]

約数ペア:

[(1, 20958345), (3, 6986115), (5, 4191669), (9, 2328705), (15, 1397223), (27, 776235), (45, 465741), (81, 258745), (135, 155247), (405, 51749)]