161975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:71

約数の個数: 24

約数和(自身を含む): 238080

約数和(自身を除く): 76105

約数列:

[1, 5, 11, 19, 25, 31, 55, 95, 155, 209, 275, 341, 475, 589, 775, 1045, 1705, 2945, 5225, 6479, 8525, 14725, 32395, 161975]

約数ペア:

[(1, 161975), (5, 32395), (11, 14725), (19, 8525), (25, 6479), (31, 5225), (55, 2945), (95, 1705), (155, 1045), (209, 775), (275, 589), (341, 475)]