217881778

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{743}}^1\times {\mathrm{7717}}^1$

素因数の和:8481

約数の個数: 16

約数和(自身を含む): 344531520

約数和(自身を除く): 126649742

約数列:

[1, 2, 19, 38, 743, 1486, 7717, 14117, 15434, 28234, 146623, 293246, 5733731, 11467462, 108940889, 217881778]

約数ペア:

[(1, 217881778), (2, 108940889), (19, 11467462), (38, 5733731), (743, 293246), (1486, 146623), (7717, 28234), (14117, 15434)]