21985101

素因数分解:

$3^4\times {\mathrm{269}}^1\times {\mathrm{1009}}^1$

素因数の和:1290

約数の個数: 20

約数和(自身を含む): 32996700

約数和(自身を除く): 11011599

約数列:

[1, 3, 9, 27, 81, 269, 807, 1009, 2421, 3027, 7263, 9081, 21789, 27243, 81729, 271421, 814263, 2442789, 7328367, 21985101]

約数ペア:

[(1, 21985101), (3, 7328367), (9, 2442789), (27, 814263), (81, 271421), (269, 81729), (807, 27243), (1009, 21789), (2421, 9081), (3027, 7263)]