21330008

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20047}}^1$

素因数の和:20079

約数の個数: 32

約数和(自身を含む): 48115200

約数和(自身を除く): 26785192

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 20047, 40094, 80188, 140329, 160376, 280658, 380893, 561316, 761786, 1122632, 1523572, 2666251, 3047144, 5332502, 10665004, 21330008]

約数ペア:

[(1, 21330008), (2, 10665004), (4, 5332502), (7, 3047144), (8, 2666251), (14, 1523572), (19, 1122632), (28, 761786), (38, 561316), (56, 380893), (76, 280658), (133, 160376), (152, 140329), (266, 80188), (532, 40094), (1064, 20047)]