21304881

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{863}}^1$

素因数の和:1093

約数の個数: 24

約数和(自身を含む): 33336576

約数和(自身を除く): 12031695

約数列:

[1, 3, 9, 13, 39, 117, 211, 633, 863, 1899, 2589, 2743, 7767, 8229, 11219, 24687, 33657, 100971, 182093, 546279, 1638837, 2367209, 7101627, 21304881]

約数ペア:

[(1, 21304881), (3, 7101627), (9, 2367209), (13, 1638837), (39, 546279), (117, 182093), (211, 100971), (633, 33657), (863, 24687), (1899, 11219), (2589, 8229), (2743, 7767)]