19939988

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{1123}}^1$

素因数の和:1343

約数の個数: 24

約数和(自身を含む): 36633408

約数和(自身を除く): 16693420

約数列:

[1, 2, 4, 23, 46, 92, 193, 386, 772, 1123, 2246, 4439, 4492, 8878, 17756, 25829, 51658, 103316, 216739, 433478, 866956, 4984997, 9969994, 19939988]

約数ペア:

[(1, 19939988), (2, 9969994), (4, 4984997), (23, 866956), (46, 433478), (92, 216739), (193, 103316), (386, 51658), (772, 25829), (1123, 17756), (2246, 8878), (4439, 4492)]