21867549

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{613}}^1$

素因数の和:697

約数の個数: 32

約数和(自身を含む): 33951744

約数和(自身を除く): 12084195

約数列:

[1, 3, 11, 23, 33, 47, 69, 141, 253, 517, 613, 759, 1081, 1551, 1839, 3243, 6743, 11891, 14099, 20229, 28811, 35673, 42297, 86433, 155089, 316921, 465267, 662653, 950763, 1987959, 7289183, 21867549]

約数ペア:

[(1, 21867549), (3, 7289183), (11, 1987959), (23, 950763), (33, 662653), (47, 465267), (69, 316921), (141, 155089), (253, 86433), (517, 42297), (613, 35673), (759, 28811), (1081, 20229), (1551, 14099), (1839, 11891), (3243, 6743)]