20407748

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{1021}}^1$

素因数の和:1307

約数の個数: 24

約数和(自身を含む): 37773120

約数和(自身を除く): 17365372

約数列:

[1, 2, 4, 19, 38, 76, 263, 526, 1021, 1052, 2042, 4084, 4997, 9994, 19399, 19988, 38798, 77596, 268523, 537046, 1074092, 5101937, 10203874, 20407748]

約数ペア:

[(1, 20407748), (2, 10203874), (4, 5101937), (19, 1074092), (38, 537046), (76, 268523), (263, 77596), (526, 38798), (1021, 19988), (1052, 19399), (2042, 9994), (4084, 4997)]