216978841

素因数分解:

${\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{37}}^1\times {\mathrm{367}}^1$

素因数の和:481

約数の個数: 24

約数和(自身を含む): 243601280

約数和(自身を除く): 26622439

約数列:

[1, 19, 29, 37, 367, 551, 703, 841, 1073, 6973, 10643, 13579, 15979, 20387, 31117, 202217, 258001, 308647, 393791, 591223, 5864293, 7482029, 11419939, 216978841]

約数ペア:

[(1, 216978841), (19, 11419939), (29, 7482029), (37, 5864293), (367, 591223), (551, 393791), (703, 308647), (841, 258001), (1073, 202217), (6973, 31117), (10643, 20387), (13579, 15979)]