20891864

素因数分解:

$2^3\times 7^1\times {\mathrm{193}}^1\times {\mathrm{1933}}^1$

素因数の和:2139

約数の個数: 32

約数和(自身を含む): 45023520

約数和(自身を除く): 24131656

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 193, 386, 772, 1351, 1544, 1933, 2702, 3866, 5404, 7732, 10808, 13531, 15464, 27062, 54124, 108248, 373069, 746138, 1492276, 2611483, 2984552, 5222966, 10445932, 20891864]

約数ペア:

[(1, 20891864), (2, 10445932), (4, 5222966), (7, 2984552), (8, 2611483), (14, 1492276), (28, 746138), (56, 373069), (193, 108248), (386, 54124), (772, 27062), (1351, 15464), (1544, 13531), (1933, 10808), (2702, 7732), (3866, 5404)]