21217983

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{8311}}^1$

素因数の和:8374

約数の個数: 16

約数和(自身を含む): 30322176

約数和(自身を除く): 9104193

約数列:

[1, 3, 23, 37, 69, 111, 851, 2553, 8311, 24933, 191153, 307507, 573459, 922521, 7072661, 21217983]

約数ペア:

[(1, 21217983), (3, 7072661), (23, 922521), (37, 573459), (69, 307507), (111, 191153), (851, 24933), (2553, 8311)]