19784919

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{2089}}^1$

素因数の和:2151

約数の個数: 32

約数和(自身を含む): 33707520

約数和(自身を除く): 13922601

約数列:

[1, 3, 7, 11, 21, 33, 41, 77, 123, 231, 287, 451, 861, 1353, 2089, 3157, 6267, 9471, 14623, 22979, 43869, 68937, 85649, 160853, 256947, 482559, 599543, 942139, 1798629, 2826417, 6594973, 19784919]

約数ペア:

[(1, 19784919), (3, 6594973), (7, 2826417), (11, 1798629), (21, 942139), (33, 599543), (41, 482559), (77, 256947), (123, 160853), (231, 85649), (287, 68937), (451, 43869), (861, 22979), (1353, 14623), (2089, 9471), (3157, 6267)]