20979918

素因数分解:

$2^1\times 3^3\times {\mathrm{107}}^1\times {\mathrm{3631}}^1$

素因数の和:3749

約数の個数: 32

約数和(自身を含む): 47070720

約数和(自身を除く): 26090802

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 107, 214, 321, 642, 963, 1926, 2889, 3631, 5778, 7262, 10893, 21786, 32679, 65358, 98037, 196074, 388517, 777034, 1165551, 2331102, 3496653, 6993306, 10489959, 20979918]

約数ペア:

[(1, 20979918), (2, 10489959), (3, 6993306), (6, 3496653), (9, 2331102), (18, 1165551), (27, 777034), (54, 388517), (107, 196074), (214, 98037), (321, 65358), (642, 32679), (963, 21786), (1926, 10893), (2889, 7262), (3631, 5778)]