18993579

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 10036821

約数列:

[1, 3, 11, 29, 33, 87, 89, 223, 267, 319, 669, 957, 979, 2453, 2581, 2937, 6467, 7359, 7743, 19401, 19847, 28391, 59541, 71137, 85173, 213411, 218317, 575563, 654951, 1726689, 6331193, 18993579]

約数ペア:

[(1, 18993579), (3, 6331193), (11, 1726689), (29, 654951), (33, 575563), (87, 218317), (89, 213411), (223, 85173), (267, 71137), (319, 59541), (669, 28391), (957, 19847), (979, 19401), (2453, 7743), (2581, 7359), (2937, 6467)]