21127918

素因数分解:

$2^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{2729}}^1$

素因数の和:2824

約数の個数: 24

約数和(自身を含む): 37346400

約数和(自身を除く): 16218482

約数列:

[1, 2, 7, 14, 49, 79, 98, 158, 553, 1106, 2729, 3871, 5458, 7742, 19103, 38206, 133721, 215591, 267442, 431182, 1509137, 3018274, 10563959, 21127918]

約数ペア:

[(1, 21127918), (2, 10563959), (7, 3018274), (14, 1509137), (49, 431182), (79, 267442), (98, 215591), (158, 133721), (553, 38206), (1106, 19103), (2729, 7742), (3871, 5458)]