19821279

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{1217}}^1$

素因数の和:1370

約数の個数: 16

約数和(自身を含む): 27185760

約数和(自身を除く): 7364481

約数列:

[1, 3, 61, 89, 183, 267, 1217, 3651, 5429, 16287, 74237, 108313, 222711, 324939, 6607093, 19821279]

約数ペア:

[(1, 19821279), (3, 6607093), (61, 324939), (89, 222711), (183, 108313), (267, 74237), (1217, 16287), (3651, 5429)]