27989975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1213}}^1$

素因数の和:1307

約数の個数: 24

約数和(自身を含む): 37935072

約数和(自身を除く): 9945097

約数列:

[1, 5, 13, 25, 65, 71, 325, 355, 923, 1213, 1775, 4615, 6065, 15769, 23075, 30325, 78845, 86123, 394225, 430615, 1119599, 2153075, 5597995, 27989975]

約数ペア:

[(1, 27989975), (5, 5597995), (13, 2153075), (25, 1119599), (65, 430615), (71, 394225), (325, 86123), (355, 78845), (923, 30325), (1213, 23075), (1775, 15769), (4615, 6065)]