21396255

素因数分解:

$3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{13331}}^1$

素因数の和:13446

約数の個数: 16

約数和(自身を含む): 34556544

約数和(自身を除く): 13160289

約数列:

[1, 3, 5, 15, 107, 321, 535, 1605, 13331, 39993, 66655, 199965, 1426417, 4279251, 7132085, 21396255]

約数ペア:

[(1, 21396255), (3, 7132085), (5, 4279251), (15, 1426417), (107, 199965), (321, 66655), (535, 39993), (1605, 13331)]