21047931

素因数分解:

$3^5\times {\mathrm{37}}^1\times {\mathrm{2341}}^1$

素因数の和:2393

約数の個数: 24

約数和(自身を含む): 32394544

約数和(自身を除く): 11346613

約数列:

[1, 3, 9, 27, 37, 81, 111, 243, 333, 999, 2341, 2997, 7023, 8991, 21069, 63207, 86617, 189621, 259851, 568863, 779553, 2338659, 7015977, 21047931]

約数ペア:

[(1, 21047931), (3, 7015977), (9, 2338659), (27, 779553), (37, 568863), (81, 259851), (111, 189621), (243, 86617), (333, 63207), (999, 21069), (2341, 8991), (2997, 7023)]