21291055

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{463}}^1\times {\mathrm{541}}^1$

素因数の和:1026

約数の個数: 16

約数和(自身を含む): 27160704

約数和(自身を除く): 5869649

約数列:

[1, 5, 17, 85, 463, 541, 2315, 2705, 7871, 9197, 39355, 45985, 250483, 1252415, 4258211, 21291055]

約数ペア:

[(1, 21291055), (5, 4258211), (17, 1252415), (85, 250483), (463, 45985), (541, 39355), (2315, 9197), (2705, 7871)]