21431421

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3049}}^1$

素因数の和:3137

約数の個数: 24

約数和(自身を含む): 34257600

約数和(自身を除く): 12826179

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 3049, 7029, 9147, 27441, 33539, 100617, 216479, 301851, 649437, 1948311, 2381269, 7143807, 21431421]

約数ペア:

[(1, 21431421), (3, 7143807), (9, 2381269), (11, 1948311), (33, 649437), (71, 301851), (99, 216479), (213, 100617), (639, 33539), (781, 27441), (2343, 9147), (3049, 7029)]