19978618

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{563}}^1\times {\mathrm{1613}}^1$

素因数の和:2189

約数の個数: 16

約数和(自身を含む): 32770656

約数和(自身を除く): 12792038

約数列:

[1, 2, 11, 22, 563, 1126, 1613, 3226, 6193, 12386, 17743, 35486, 908119, 1816238, 9989309, 19978618]

約数ペア:

[(1, 19978618), (2, 9989309), (11, 1816238), (22, 908119), (563, 35486), (1126, 17743), (1613, 12386), (3226, 6193)]