21192105

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128437}}^1$

素因数の和:128456

約数の個数: 16

約数和(自身を含む): 36990144

約数和(自身を除く): 15798039

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 128437, 385311, 642185, 1412807, 1926555, 4238421, 7064035, 21192105]

約数ペア:

[(1, 21192105), (3, 7064035), (5, 4238421), (11, 1926555), (15, 1412807), (33, 642185), (55, 385311), (165, 128437)]