19987792

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{113567}}^1$

素因数の和:113586

約数の個数: 20

約数和(自身を含む): 42247296

約数和(自身を除く): 22259504

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 113567, 227134, 454268, 908536, 1249237, 1817072, 2498474, 4996948, 9993896, 19987792]

約数ペア:

[(1, 19987792), (2, 9993896), (4, 4996948), (8, 2498474), (11, 1817072), (16, 1249237), (22, 908536), (44, 454268), (88, 227134), (176, 113567)]