18986942

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{23557}}^1$

素因数の和:23603

約数の個数: 16

約数和(自身を含む): 31661952

約数和(自身を除く): 12675010

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 23557, 47114, 306241, 612482, 730267, 1460534, 9493471, 18986942]

約数ペア:

[(1, 18986942), (2, 9493471), (13, 1460534), (26, 730267), (31, 612482), (62, 306241), (403, 47114), (806, 23557)]