28780881

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{379}}^1\times {\mathrm{1489}}^1$

素因数の和:1888

約数の個数: 16

約数和(自身を含む): 40766400

約数和(自身を除く): 11985519

約数列:

[1, 3, 17, 51, 379, 1137, 1489, 4467, 6443, 19329, 25313, 75939, 564331, 1692993, 9593627, 28780881]

約数ペア:

[(1, 28780881), (3, 9593627), (17, 1692993), (51, 564331), (379, 75939), (1137, 25313), (1489, 19329), (4467, 6443)]