21060945

素因数分解:

$3^3\times 5^1\times {\mathrm{156007}}^1$

素因数の和:156021

約数の個数: 16

約数和(自身を含む): 37441920

約数和(自身を除く): 16380975

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 156007, 468021, 780035, 1404063, 2340105, 4212189, 7020315, 21060945]

約数ペア:

[(1, 21060945), (3, 7020315), (5, 4212189), (9, 2340105), (15, 1404063), (27, 780035), (45, 468021), (135, 156007)]