638218881

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{1223}}^1\times {\mathrm{2521}}^1$

素因数の和:3773

約数の個数: 24

約数和(自身を含む): 963121536

約数和(自身を除く): 324902655

約数列:

[1, 3, 9, 23, 69, 207, 1223, 2521, 3669, 7563, 11007, 22689, 28129, 57983, 84387, 173949, 253161, 521847, 3083183, 9249549, 27748647, 70913209, 212739627, 638218881]

約数ペア:

[(1, 638218881), (3, 212739627), (9, 70913209), (23, 27748647), (69, 9249549), (207, 3083183), (1223, 521847), (2521, 253161), (3669, 173949), (7563, 84387), (11007, 57983), (22689, 28129)]