281131245

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{87991}}^1$

素因数の和:88073

約数の個数: 24

約数和(自身を含む): 494163072

約数和(自身を除く): 213031827

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 87991, 263973, 439955, 791919, 1319865, 3959595, 6247361, 18742083, 31236805, 56226249, 93710415, 281131245]

約数ペア:

[(1, 281131245), (3, 93710415), (5, 56226249), (9, 31236805), (15, 18742083), (45, 6247361), (71, 3959595), (213, 1319865), (355, 791919), (639, 439955), (1065, 263973), (3195, 87991)]