21581085

素因数分解:

$3^1\times 5^1\times {\mathrm{271}}^1\times {\mathrm{5309}}^1$

素因数の和:5588

約数の個数: 16

約数和(自身を含む): 34663680

約数和(自身を除く): 13082595

約数列:

[1, 3, 5, 15, 271, 813, 1355, 4065, 5309, 15927, 26545, 79635, 1438739, 4316217, 7193695, 21581085]

約数ペア:

[(1, 21581085), (3, 7193695), (5, 4316217), (15, 1438739), (271, 79635), (813, 26545), (1355, 15927), (4065, 5309)]