21256308

素因数分解:

$2^2\times 3^2\times {\mathrm{109}}^1\times {\mathrm{5417}}^1$

素因数の和:5536

約数の個数: 36

約数和(自身を含む): 54234180

約数和(自身を除く): 32977872

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 109, 218, 327, 436, 654, 981, 1308, 1962, 3924, 5417, 10834, 16251, 21668, 32502, 48753, 65004, 97506, 195012, 590453, 1180906, 1771359, 2361812, 3542718, 5314077, 7085436, 10628154, 21256308]

約数ペア:

[(1, 21256308), (2, 10628154), (3, 7085436), (4, 5314077), (6, 3542718), (9, 2361812), (12, 1771359), (18, 1180906), (36, 590453), (109, 195012), (218, 97506), (327, 65004), (436, 48753), (654, 32502), (981, 21668), (1308, 16251), (1962, 10834), (3924, 5417)]