21672

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{43}}^1$

素因数の和:62

約数の個数: 48

約数和(自身を含む): 68640

約数和(自身を除く): 46968

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 43, 56, 63, 72, 84, 86, 126, 129, 168, 172, 252, 258, 301, 344, 387, 504, 516, 602, 774, 903, 1032, 1204, 1548, 1806, 2408, 2709, 3096, 3612, 5418, 7224, 10836, 21672]

約数ペア:

[(1, 21672), (2, 10836), (3, 7224), (4, 5418), (6, 3612), (7, 3096), (8, 2709), (9, 2408), (12, 1806), (14, 1548), (18, 1204), (21, 1032), (24, 903), (28, 774), (36, 602), (42, 516), (43, 504), (56, 387), (63, 344), (72, 301), (84, 258), (86, 252), (126, 172), (129, 168)]