21008511

素因数分解:

$3^3\times {\mathrm{53}}^2\times {\mathrm{277}}^1$

素因数の和:392

約数の個数: 24

約数和(自身を含む): 31836560

約数和(自身を除く): 10828049

約数列:

[1, 3, 9, 27, 53, 159, 277, 477, 831, 1431, 2493, 2809, 7479, 8427, 14681, 25281, 44043, 75843, 132129, 396387, 778093, 2334279, 7002837, 21008511]

約数ペア:

[(1, 21008511), (3, 7002837), (9, 2334279), (27, 778093), (53, 396387), (159, 132129), (277, 75843), (477, 44043), (831, 25281), (1431, 14681), (2493, 8427), (2809, 7479)]