21990518

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{12043}}^1$

素因数の和:12139

約数の個数: 16

約数和(自身を含む): 36421056

約数和(自身を除く): 14430538

約数列:

[1, 2, 11, 22, 83, 166, 913, 1826, 12043, 24086, 132473, 264946, 999569, 1999138, 10995259, 21990518]

約数ペア:

[(1, 21990518), (2, 10995259), (11, 1999138), (22, 999569), (83, 264946), (166, 132473), (913, 24086), (1826, 12043)]