639246291

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{593}}^1\times {\mathrm{919}}^1$

素因数の和:1555

約数の個数: 32

約数和(自身を含む): 944317440

約数和(自身を除く): 305071149

約数列:

[1, 3, 17, 23, 51, 69, 391, 593, 919, 1173, 1779, 2757, 10081, 13639, 15623, 21137, 30243, 40917, 46869, 63411, 231863, 359329, 544967, 695589, 1077987, 1634901, 9264439, 12534241, 27793317, 37602723, 213082097, 639246291]

約数ペア:

[(1, 639246291), (3, 213082097), (17, 37602723), (23, 27793317), (51, 12534241), (69, 9264439), (391, 1634901), (593, 1077987), (919, 695589), (1173, 544967), (1779, 359329), (2757, 231863), (10081, 63411), (13639, 46869), (15623, 40917), (21137, 30243)]