1291237168

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{19961}}^1$

素因数の和:20293

約数の個数: 40

約数和(自身を含む): 2703014496

約数和(自身を除く): 1411777328

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 311, 622, 1244, 2488, 4043, 4976, 8086, 16172, 19961, 32344, 39922, 64688, 79844, 159688, 259493, 319376, 518986, 1037972, 2075944, 4151888, 6207871, 12415742, 24831484, 49662968, 80702323, 99325936, 161404646, 322809292, 645618584, 1291237168]

約数ペア:

[(1, 1291237168), (2, 645618584), (4, 322809292), (8, 161404646), (13, 99325936), (16, 80702323), (26, 49662968), (52, 24831484), (104, 12415742), (208, 6207871), (311, 4151888), (622, 2075944), (1244, 1037972), (2488, 518986), (4043, 319376), (4976, 259493), (8086, 159688), (16172, 79844), (19961, 64688), (32344, 39922)]