278617539

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{1061}}^1$

素因数の和:1371

約数の個数: 32

約数和(自身を含む): 415964160

約数和(自身を除く): 137346621

約数列:

[1, 3, 17, 19, 51, 57, 271, 323, 813, 969, 1061, 3183, 4607, 5149, 13821, 15447, 18037, 20159, 54111, 60477, 87533, 262599, 287531, 342703, 862593, 1028109, 4888027, 5463089, 14664081, 16389267, 92872513, 278617539]

約数ペア:

[(1, 278617539), (3, 92872513), (17, 16389267), (19, 14664081), (51, 5463089), (57, 4888027), (271, 1028109), (323, 862593), (813, 342703), (969, 287531), (1061, 262599), (3183, 87533), (4607, 60477), (5149, 54111), (13821, 20159), (15447, 18037)]