21045945

素因数分解:

$3^1\times 5^1\times {\mathrm{1097}}^1\times {\mathrm{1279}}^1$

素因数の和:2384

約数の個数: 16

約数和(自身を含む): 33730560

約数和(自身を除く): 12684615

約数列:

[1, 3, 5, 15, 1097, 1279, 3291, 3837, 5485, 6395, 16455, 19185, 1403063, 4209189, 7015315, 21045945]

約数ペア:

[(1, 21045945), (3, 7015315), (5, 4209189), (15, 1403063), (1097, 19185), (1279, 16455), (3291, 6395), (3837, 5485)]