21021711

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{1831}}^1$

素因数の和:1966

約数の個数: 16

約数和(自身を含む): 29018880

約数和(自身を除く): 7997169

約数列:

[1, 3, 43, 89, 129, 267, 1831, 3827, 5493, 11481, 78733, 162959, 236199, 488877, 7007237, 21021711]

約数ペア:

[(1, 21021711), (3, 7007237), (43, 488877), (89, 236199), (129, 162959), (267, 78733), (1831, 11481), (3827, 5493)]