21171472

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{9949}}^1$

素因数の和:9983

約数の個数: 40

約数和(自身を含む): 49352000

約数和(自身を除く): 28180528

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 9949, 19898, 39796, 69643, 79592, 139286, 159184, 189031, 278572, 378062, 557144, 756124, 1114288, 1323217, 1512248, 2646434, 3024496, 5292868, 10585736, 21171472]

約数ペア:

[(1, 21171472), (2, 10585736), (4, 5292868), (7, 3024496), (8, 2646434), (14, 1512248), (16, 1323217), (19, 1114288), (28, 756124), (38, 557144), (56, 378062), (76, 278572), (112, 189031), (133, 159184), (152, 139286), (266, 79592), (304, 69643), (532, 39796), (1064, 19898), (2128, 9949)]