21005572

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{11197}}^1$

素因数の和:11275

約数の個数: 24

約数和(自身を含む): 42641984

約数和(自身を除く): 21636412

約数列:

[1, 2, 4, 7, 14, 28, 67, 134, 268, 469, 938, 1876, 11197, 22394, 44788, 78379, 156758, 313516, 750199, 1500398, 3000796, 5251393, 10502786, 21005572]

約数ペア:

[(1, 21005572), (2, 10502786), (4, 5251393), (7, 3000796), (14, 1500398), (28, 750199), (67, 313516), (134, 156758), (268, 78379), (469, 44788), (938, 22394), (1876, 11197)]