21645057

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^2\times {\mathrm{277}}^1$

素因数の和:409

約数の個数: 24

約数和(自身を含む): 33653568

約数和(自身を除く): 12008511

約数列:

[1, 3, 7, 21, 61, 183, 277, 427, 831, 1281, 1939, 3721, 5817, 11163, 16897, 26047, 50691, 78141, 118279, 354837, 1030717, 3092151, 7215019, 21645057]

約数ペア:

[(1, 21645057), (3, 7215019), (7, 3092151), (21, 1030717), (61, 354837), (183, 118279), (277, 78141), (427, 50691), (831, 26047), (1281, 16897), (1939, 11163), (3721, 5817)]