21234561

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{1697}}^1$

素因数の和:1840

約数の個数: 16

約数和(自身を含む): 29287104

約数和(自身を除く): 8052543

約数列:

[1, 3, 43, 97, 129, 291, 1697, 4171, 5091, 12513, 72971, 164609, 218913, 493827, 7078187, 21234561]

約数ペア:

[(1, 21234561), (3, 7078187), (43, 493827), (97, 218913), (129, 164609), (291, 72971), (1697, 12513), (4171, 5091)]