21516866

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{90407}}^1$

素因数の和:90433

約数の個数: 16

約数和(自身を含む): 39056256

約数和(自身を除く): 17539390

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 90407, 180814, 632849, 1265698, 1536919, 3073838, 10758433, 21516866]

約数ペア:

[(1, 21516866), (2, 10758433), (7, 3073838), (14, 1536919), (17, 1265698), (34, 632849), (119, 180814), (238, 90407)]