21020308

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{14557}}^1$

素因数の和:14599

約数の個数: 18

約数和(自身を含む): 38826186

約数和(自身を除く): 17805878

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 14557, 29114, 58228, 276583, 553166, 1106332, 5255077, 10510154, 21020308]

約数ペア:

[(1, 21020308), (2, 10510154), (4, 5255077), (19, 1106332), (38, 553166), (76, 276583), (361, 58228), (722, 29114), (1444, 14557)]