9871981

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:209

約数の個数: 24

約数和(自身を含む): 12155136

約数和(自身を除く): 2283155

約数列:

[1, 7, 31, 49, 67, 97, 217, 469, 679, 1519, 2077, 3007, 3283, 4753, 6499, 14539, 21049, 45493, 101773, 147343, 201469, 318451, 1410283, 9871981]

約数ペア:

[(1, 9871981), (7, 1410283), (31, 318451), (49, 201469), (67, 147343), (97, 101773), (217, 45493), (469, 21049), (679, 14539), (1519, 6499), (2077, 4753), (3007, 3283)]